英语4单元9年级范文
“明夏”通过精心收集，向本站投稿了17篇英语4单元9年级范文，下面是小编为大家整理后的英语4单元9年级范文，供大家参考借鉴，希望可以帮助到有需要的朋友。
篇1：9年级第1单元英语作文
True LoveIn the beginning, love is always sweet.As time is slipping away, boredom, be used to, abandonment, loneliness, despair and cold smile will come gradually.Once being eager to stay with someone forever, later, we would felicitateourselves on leaving him/her.During those transient days, we thought we loved him/her deeply.Then, we got to know it is not love but a lie by which we comfort ourselves.
It is turned out that those who you thought you could not lose, actually, it is not very hard to forget them. You drained up your tears, there will be another one pleasing you.You had plunged yourself into a depression, finally, you found those who do not love you are not worthy of your sadness.Recalling those unhappy things, is it a comedy? When your wrong love
stops its steps, a brand-new world will be shown to you. All sadness will become history
For love, imagination is often more beautiful than reality. The same with meeting, also with separation. We thought we would have a deep love toward somebody. Incoming days will let you know in fact it just is very shallow, very shallow.The most deep and heaviest love must grow up with days.With love, two strangers can suddenly be familiar with each other that they sleep on the same bed. However, this two similar people,While breaking up, say, “I think you are more and more strange to me” It is love that has two strangers become acquaintances, then turning the two acquaintances into strangers again.Love is such kind of game which makes two strangers become lovers, then return them into the original situation.
篇2：9年级第10单元英语作文
On the Importance of Diligence for People's Growth
As is known to all, every man has to work. The life of a lazy man is of no use to himself and to others. The man who is too lazy to work is the man who is more likely to beg or to steal. Every man should be diligent when he is young.
From my point of view，diligence is of vital significance in one's life and career. There are some reasons as follows. Firstly, industrious spirit is an indispensable quality that makes a person stand out, as most people are biologically endowed with the IQ in the similar level, with few being very outstanding or very low. Secondly, diligence leads to
accomplishments while laziness must result in failure. An idle man indulges himself in comforts and he is doomed to fail. Lastly, diligence helps remove ignorance, overcome difficulties, and enlighten the mind.
In one word, I hold the view that diligence is crucial to one‘s life. One must study hard when he is young so that he may make great progress, succeed in life and become useful to his country. Therefore, we say that diligence is the vital ingredient for one's growth.
篇3：9年级第10单元英语作文
The Influence of Television and Movies
There is no doubt that watching television and movies can influence the way that people behave. Moreover, it seems that people are spending more and more time watching some sort of visual entertainment, whether it is television, a video tape or a DVD. Therefore, the effects of visual media cannot be ignored.
One obvious effect of the these media is that watching them induces people to buy certain products. television advertising is widespread and, nowadays, even movie theaters permit advertisements. Another way TV and the movies affect people is that they give people either a broader view of the world or a distorted one, depending on what type of program they watch. Those who watch news and educational program can learn many new things while those who watch primarily entertainment shows may come to believe that most people in the world possess great wealth and good looks. It may make them become dissatisfied with their own lives. Finally, perhaps the most susceptible viewers are children, who may be unable to tell fact from fiction and may try to imitate acts that they see on TV or in the movies.
With the every-increasing popularity of video entertainment, society must pay attention to these effects. Television and movies, while entertaining and informative, cannot take the place of real experience.
篇4：9年级短篇英语作文
The products that are labelled with the words “ Made In China” can be seen everywhere. These products refer to be manufactured in China and they contain both the material and cultural elements. Once these products were very popular around the world for the low price and excellent quality, but in most foreigners’ eyes, they treat these products with low end and low quality. With the development of Chinese economy, the government try to improve its image, so it is in need of creating our own brand. Made In China is the good choice, the government makes effort to improve the quality, so as to promote the international image.
标明“中国制造”的产品随处可见。这些产品指在中国生产，它们包含了中国的物质和文化元素。曾经这些产品在世界各地由于低价格和好的品质而非常受欢迎,但在大多数外国人的眼里,他们认为这些产品是低端和低质量的。随着中国经济的发展,政府试图改善自身形象,所以需要创建我们自己的品牌。中国制造是不错的选择,政府努力提高质量,以促进国际形象。
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篇5：9年级短篇英语作文
The new president has been elected in the United States and Donald Trump is the winner. The world is watching his family and his beautiful and talented first daughter catches the public’s attention. This smart girl has been long recognized by the public, because she is the shinning star all the time. When she was in high school, his father only gave her the basic money to support her life, so she did the model job to earn more income. But she did not lost herself in the fame, she kept studying in the top university and chose to be a businesswoman. She made the great achievement and to be Trump’s pride.
在美国新任总统已经选出来了,唐纳德特朗普是赢家。全世界都在关注着他的家人和他美丽又才华横溢的大女儿，吸引了公众的注意力。这个聪明的女孩一直为公众所熟悉,因为她是耀眼的明星。当她在高中的时候,他的父亲只给了她基本的钱来支持她的生活,所以她当起了模特的工作来来赚取更多的收入。但她并没有让自己迷失在名声中,她一直在顶尖大学学习，最终选择做一名商人。她取得了伟大的成就,成为了特朗普的骄傲。
篇6：9年级英语词组
1.be made of 由...制作/制造(材料)
2.be made in在...制作/制造 (产地)
3.be made from由......制造/制成
4.environmental protection环境保护
5.be famous for 以......闻名;为人知晓
be known for以......闻名
6. be produced in在......生产
7. be used for被用于......
8.as far as I know据我所知
9.pick by hand手工采摘
10. turn... into把......变成......
11. no matter不论
12.all over(around) the world全世界
13.even though即使
14.avoid doing sth避免做某事
15.everyday things日常用品
16.find out 查明;弄清
17.go on a vacation去度假
18.paper cutting剪纸
19.such as 例如
20. send for发送;派人去请
21.send out发出;放出;发送
22.be covered with被......覆盖
23.rise into上升到;升入
24.put on 张贴
25.as symbols of作为......的象征
26.fairy tale 童话故事
27.allow sb to do sth允许某人做某事
篇7：9年级英语词组
1. the Lantern Festival 元宵节
2. the Dragon Boat Festival 端午节
3. the Water Festival 泼水节 、
4. eat five meals a day 一天吃五餐
5. put on five pounds 体重增加了五磅
6. in two weeks 两星期之后
7. be similar to... 与.......相似
8. throw water at each other 互相泼水
9. in the shape of... 呈…的形状
10. folk stories民间传说故事
11. lay out摆开;布置
12. the story of Chang’e嫦娥的故事
13. refuse to do sth 拒绝做某事
14. have good luck in the new year在新的一年里有好运气
15. end up最终成为;最后处于
16.end up with以…结束
17. share sth with sb 与…分享…
18. as a result结果
19. one ... the other... (两者中)一个…另一个…
20. care about 关心
21. dress up 乔装打扮
22. haunted house 鬼屋
23. play a trick on sb.捉弄某人
24. give out 分发
25. trick or treat (万圣节用语)不给糖果就捣蛋
26. light candles 点蜡烛
27. the importance of…的重要性
28. take sb around…=show sb around…带某人到处走走
29. warn sb to do sth.警告某人做某事
warn sb not to do sth警告某人不要做某事
30. the beginning of new life 新生命的开始
31. remind sb of … 使某人回想起…
32. promise to do sth.承诺做某事
33. treat sb. with. 用/以…对待某人
34.lose weight减肥
35.give up放弃
36.What do/does+sb. + think of sth. ?你认为..怎么样?
篇8：9年级英语词组
1. ask sb. for help 请求某人的帮助;
2.improve one’ s speaking skills 提髙某人说的能力;
3. spoken English=oral English英语口语;
4. make word cards 制作单词卡片;
5. listen to tapes 听磁带;
6. the secret to language learning 语言学习的诀窍;
7. be afraid to do sth.不敢'做某事;
8. fall in love with.. . 爱上 ;
9. body language 肢体语言;
10. take notes 记笔记 ;
11. make mistakes in grammar 犯语法错误 ;
12. learning habits 学习习惯;
13. have sth. in common 有...共同点 ;
14. pay attention to 注意 ;
15. connect…with…把....与....联系起来;
16. write down key words 摘抄重点词 ;
17. in class 在课堂上 after class 课后 ;
18. be interested in… 对.......感兴趣 ;
19. do sth. on one’s own 独立做某事 ;
20. worry about 为...而担忧;
21. depend on=rely on 依赖;取决于 ;
22.be patient 耐心点儿 ;
23.What about doing sth ?…怎么样?
24.by+V-ing 通过做….
25. It’s +adj+ (for sb) to do sth 做某事对某人来说…
26. find it + adj + to do sth 发现做某事…
27. It’s a piece of cake. 小菜一碟/太容易了!
篇9：9年级英语作文短篇
This simple picture represents a situation that every person must face: when approaching a junction, which direction should one choose?
Most viewers can empathize with the sense of hesitation and uncertainty embodied in such an image. Without exception, everyone has to make choices in life, whether they concern school, career, or love. While some choices are simple, one cannot avoid the task of making difficult decisions.
Choices are often directly related to one's happiness. University students,for example, face a hard and crucial decision upon graduating. Many students have difficulty deciding whether to continue studying or begin developing a career. Every individual is different, and one must take the factors of one's personal life into consideration. In addition to an awareness of specific circumstances, however, making the right choice also depends on correct appraisal of oneself.
In order to choose correctly, therefore, one must be both realistic and self aware.Furthermore, once having made a decision, one should seriously accept and pursue the path one has chosen, and strive towards the realization of one's goal with spirit.
篇10：7年级英语作文4单元
Xinjiang is located in the motherland as inland by a strong continental climate, where gathered a lot of ethnic minorities, most of the residents prefer to meat-based diet, beef and mutton can be seen everywhere here, so that by the Xinjiang sure to try the local Kaoquan Yang, as well as a real string of Xinjiang lamb, lamb pilaf and hands. Pasta is the main staple food in Xinjiang, where the more common one called “Nang”, showing apricot yellow, surrounded by thick, thin middle. There sesame Nang, meat Nang, Nang layers, such as g Nang and other varieties, is a kind of flour mixed with yeast su**ce, light salt and noodles, baked cake made of. Nang mind when doing thin at the bottom of the bundle of numerous holes, each affixed to Nang Pit, to be braised roast 10 minutes later, crisp taste of “Nang” on the pan, and this “Nang” may keep well, and So many visitors to Xinjiang deliberately brought back taste of this food. According to Xinjiang because it is a long time here than other places in the fruit sweet, so Turpan grapes, Hami melon is well-known at home and abroad. Xinjiang cuisine: roast lamb pilaf thin-skinned dumplings baked buns Kaoquan Yang Xiang-Fen Tang Nang La striped clutch jen na Smoked breast meat Ma Ma San intestinal oil seed oil tower sub-hanging braised pork noodle soup Niangpi seed oil San Kuqa sub-Pal Wood breast milk horse milk wine.
篇11：7年级英语作文4单元
Currently, some cities are considering a food ban on subways, which has sparked heated discussion. Some people say food should be banned because of the trash and rats they attract. And, garbage from discarded food can cause track fires. Beyond sanitary and mechanical concerns, food can also fiiel fist fights, as was discovered last week by one passenger who criticized a woman eating steamed stuffed bun on the subway.
However, some others are opposed to the idea. They argue that peopk like eating in the train in the morning because they don’t have enough time to eat at their houses or restaurants. Sometimes that may be the only time or meal a transit rider may be able to eat especially when traveling long distances. Besides, there are people, for example diabetics, who do require food at various times to maintain blood-sugar levels.
Personalty, rm against the ban becmise of the huge inconvenience it would cause commuters, and the expense involved in enforcing it. Still, I believe we should have a little common courtesy. I think we all have responsibility to try to treat our subway system and fellow riders with respect, and that extends to food as well.
篇12：9年级上册化学单元总结
9年级上册化学单元总结
1、钠及其化合物的转化关系
2 ② NaCl 2
①Na2O＋2HCl=2NaCl＋H2O ②2Na＋2HCl=2NaCl＋H2↑
＋＋＋＋Na2O＋2H=2Na＋H2O 2Na＋2H=2Na＋H2↑
③2Na2O2＋4HCl=4NaCl＋O2↑＋2H2O ④4Na＋O2=2Na2O
2Na2O2＋4H+=4Na+＋O2↑＋2H2O
2Na＋2H2O=2NaOH＋H2↑
※⑤2Na＋O2 △ Na2O2 2Na＋2H2O=2Na++2OH＋H2↑ －⑦Na2O＋H2O=2NaOH ※⑧2Na2O
2＋
2H2O=4NaOH＋O2↑
＋－＋－ Na2O＋H2O=2Na＋2OH2Na2O2＋2H2O=4Na＋4OH＋O2↑
⑨Na2O＋CO2=Na2CO3※⑩2Na2O2＋2CO2=2Na2CO3＋O2
⑾2NaOH＋CO2=Na2CO3＋H2O ⑿Na2CO3＋Ca(OH)2=CaCO3↓+2NaOH
－－－＋ 2OH＋CO2=CO32＋H2OCO32＋Ca2=CaCO3↓
⒀NaOH＋CO2=NaHCO3 ※⒁Na2CO3＋H2O＋CO2=2NaHCO3
－－－－ OH＋CO2=HCO3 CO32＋H2O＋CO2=2HCO3
或Na2CO3＋HCl=NaHCO3＋NaCl
－＋－ CO32＋H= HCO3NaHCO3＋NaOH=Na2CO3＋H2O
※⒂2NaHCO3 △ Na2CO3＋H2O＋CO2↑ 或 HCO3＋OH=CO32＋H2O －－－
⒃Na2CO3＋2HCl=2NaCl＋H2O＋CO2↑ ⒄NaHC
O3＋HCl=NaCl＋H2O＋CO2↑
－＋－＋ CO32＋2H=H2O＋CO2↑HCO3＋H=H2O＋CO2↑
补充：①石灰水中加入少量NaHCO3 ： Ca(OH)2＋NaHCO3=CaCO3↓＋NaOH＋H2O
＋－－Ca2＋OH＋HCO3=CaCO3↓＋H2O
②石灰水中加入过量NaHCO3 ： Ca(OH)2＋2NaHCO3=CaCO3↓＋Na2CO3＋2H2O
＋－－－Ca2＋2OH＋2HCO3=CaCO3↓＋CO32+2H2O
2、铝及其化合物的转化关系
3 2O3l(OH)3KAl(SO4)2
2 1
①2Al＋6HCl=2AlCl3＋3H2↑ ※②2Al＋2NaOH＋2H2O=2NaAlO2＋3H2↑
＋＋－－ 2Al＋6H=2Al3＋3H2↑ 2Al＋2OH＋2H2O=2AlO2＋3H2↑
※ ③4Al＋3O2 △ 2O3④2Al2O3(熔融)电解
4Al＋3O2↑
※ ⑤Al2O3＋6HCl=2AlCl3＋3H2O ※⑥Al2O3＋2NaOH=2NaAlO2＋H2O
＋＋－－ Al2O3＋6H=2Al3＋3H2OAl2O3＋2OH=2AlO2＋H2O
※⑦AlCl3＋3NH3·H2O=Al(OH)3↓＋3NH4Cl或AlCl3＋3NaOH=Al(OH)3↓＋3NaCl
＋＋＋－Al3＋3NH3·H2O = Al(OH)3↓＋3NH4 Al3＋3OH=Al(OH)3↓
⑧Al(OH)3＋3HCl=AlCl3＋3H2O ⑨2Al(OH)3
＋＋ △ Al2O3＋3H2OAl(OH)3＋3H=Al3＋3H2O
☆⑩NaAlO2＋HCl＋H2O =Al(OH)3↓＋NaCl或2NaAlO2＋3H2O＋CO2=2Al(OH)3↓＋Na2CO3
－＋－－ AlO2＋H＋H2O=Al(OH)3↓ 2AlO2＋3H2O＋CO2=2Al(OH)3↓＋CO32 或NaAlO2＋2H2O＋CO2=Al(OH)3↓＋NaHCO3 ※⑾Al(OH)3＋NaOH = NaAlO2＋2H2O
－－－－AlO2＋2H2O＋CO2=Al(OH)3↓＋HCO3 Al(OH)3＋OH= AlO2＋2H2O ⑿AlCl3＋4NaOH = NaAlO2＋3NaCl＋2H2O ⒀NaAlO2＋4HCl=AlCl3＋NaCl＋2H2O
＋－－－＋＋Al3＋4OH= AlO2＋2H2OAlO2＋4H=Al3＋2H2O
＋＋☆⒁AlCl3＋3NaAlO2＋6H2O＝4Al(OH)3↓＋3NaCl ⒂Al3＋3H2OAl(OH)3胶体＋3H
－Al3+ ＋ 3AlO2＋6H2O＝4Al(OH)3↓明矾净水
3、铁及其化合物的转化关系
⑦ ③ ① FeO Fe FeCl Fe(OH)2 342 ⑧ ② ⑥ ⑤ ⑨ Fe(SCN) O3 3△ 高温 ①Fe3O4＋4CO 3Fe＋4CO2 ※② ＋4H2O(g)Fe3O4＋4H2 点燃 ③ Fe＋2HCl=FeCl2＋H2↑或3Fe＋2O2 Fe3O4 点燃 ＋＋Fe＋2H=Fe2＋H2↑ ④2Fe＋3Cl22FeCl
3 ※⑤2FeCl2＋Cl2 = 2FeCl3 ※⑥Fe＋2FeCl3 = 3FeCl2
＋＋－＋＋2Fe2＋Cl2 = 2Fe3＋2Cl Fe＋2Fe3= 3Fe2
⑦FeCl2＋2NaOH = Fe(OH)2↓＋2NaCl ⑧Fe(OH)2＋2HCl = FeCl2＋2H2O
＋－＋＋ Fe2＋2OH= Fe(OH)2↓ Fe(OH)2＋2H= Fe2＋2H2O
※⑨4Fe(OH)2＋O2＋2H2O = 4Fe(OH)3⑩FeCl3＋3NaOH = Fe(OH)3↓＋3NaCl
＋－ 白色沉淀迅速变成灰绿色，最后变成红褐色 Fe3＋3OH= Fe(OH)3↓
＋＋⑾Fe(OH)3＋3HCl = FeCl3＋3H2OFe3＋3H2OFe(OH)3胶体＋3H(净水)
Fe(OH)3＋3H= Fe3＋3H2O⑿2Fe(OH)3 ＋＋ △
Fe2O3＋3H2O
⒀Fe2O3＋6HCl = 2FeCl3＋3H2O ※⒁FeCl3＋3KSCN = Fe(SCN)3＋3KCl
＋＋＋－ Fe2O3＋6H= 2Fe3＋3H2O Fe3＋3SCN= Fe(SCN)3
2
4、硅及其化合物的转化关系
△ 4①Si＋O2 SiO2
高温 ① ②SiO2＋2CSi＋2CO↑ 2CaSiO3
② ※③SiO2＋4HF = SiF4↑＋2H2O（刻蚀玻璃） ☆④Si＋4HF = SiF4↑＋2H2↑
⑦ 高温 NaSiO23 ⑧ H 2 3 SiO2＋CaOCaSiO3
高温 SiO＋2NaOH = NaSiO＋HOSiO＋CaCOCaSiO＋CO↑ 223223
SiO2＋2OH= SiO3＋H2O Na2SiO3＋2HCl = H2SiO3↓＋2NaCl SiO2＋Na2CO3高温 －2－ 32Na2SiO3＋CO2↑ SiO32＋2H= H2SiO3↓ －＋
※⑦Na2SiO3＋H2O＋CO2=H2SiO3↓＋Na2CO3或Na2SiO3＋2H2O＋2CO2=H2SiO3↓＋2NaHCO3
－－－－ SiO32＋H2O＋CO2=H2SiO3↓＋CO32或SiO32＋2H2O＋2CO2=H2SiO3↓＋2HCO3 ⑧H2SiO3＋2NaOH = Na2SiO3＋2H2O ⑨H2SiO3
－－ △ H2O＋SiO2
△
H2SiO3＋2OH= SiO32＋2H2O☆⑾粗硅提纯： ☆⑩Si＋2NaOH＋H2O=Na2SiO3＋2H2↑ Si(粗)＋2Cl2－－ Si＋2OH＋H2O=SiO32＋2H2↑ SiCl4＋2H2SiCl4 Si(纯)＋4HCl 高温
5、氯及其化合物的转化关系
点燃 ①2Fe＋3Cl2 2FeCl3 2
点燃 ②Cu＋Cl2 CuCl2
⑤ ③2FeCl3＋Cu = 2FeCl2＋CuCl2 ⑧ ＋＋＋Cl 2 NaClO 2Fe3＋Cu = 2Fe2＋Cu2 ④ 点燃 ④H2＋Cl2 2HCl 或光照△ ③ ※⑤MnO2＋4HCl(浓) 2＋Cl2↑＋2H2O CuCl2 FeCl3
＋－ △ 2＋ MnO2＋4H＋2ClMn＋Cl2↑＋2H2O
※⑥Cl2＋H2O = HCl＋HClO※⑦2HClO ＋O2↑
＋－光照 ＋－ Cl2＋H2O = H＋Cl＋HClO2H＋2Cl＋O2↑
※⑧Cl2＋2NaOH = NaCl＋NaClO＋H2O ※⑨工业制漂粉
－－－ Cl2＋2OH= Cl＋ClO＋H2O 2Cl2＋2Ca(OH)2 = CaCl2＋Ca(ClO)2＋2H2O
※ ⑩漂粉的漂白原理
Ca(ClO)2＋H2O＋CO2 = CaCO3↓＋2HClO或Ca(ClO)2＋2HCl = CaCl2＋2HClO
＋－－＋ Ca2＋2ClO＋H2O＋CO2= CaCO3↓＋2HClO或ClO＋H= HClO 向漂粉溶液中通入过量的CO2：Ca(ClO)2＋2H2O＋2CO2 = Ca(HCO3)2＋2HClO
－－ClO＋H2O＋CO2 = HCO3＋HClO
3 光照
6、硫及其化合物的转化关系
点燃
点燃 ①2H2S + O22S + 2H2SO2 + 2H2O(O2过量) 2O(O2不足) ②2H2S + 3O2 点燃 ③S＋O2 SO2 ④2H2S＋SO2=3S＋2H2O
※⑤2SO2＋O2
⑦SO2＋CaO催化剂 加热 △
2SO3⑥SO3＋H2O = H2SO4
＋－CaSO3 或 SO2＋Ca(OH)2 = CaSO3↓＋H2O
△
SO3＋CaO = CaSO4SO2＋Ca2＋2OH=CaSO3↓＋H2O SO3＋Ca(OH)2 = CaSO4＋H2O⑨2CaSO3＋O2
＋－－※⑩SO2＋Cl2＋2H2O = H2SO4＋2HCl ※⑾Cu＋2H2SO4(浓) SO2＋Cl2＋2H2O = 4H＋SO42＋2Cl Cu＋2H2SO4(浓) △ △ ＋2CaSO4 CuSO4＋SO2↑＋2H2O － △ 2＋SO42＋SO2↑＋2H2O
※⑿C＋2H2SO4(浓) CO2↑＋2SO2↑＋2H2O 7、氮及其化合物的转化关系
⑥ ⑦※①N2＋O2高温或放电 2NO 4ClN23NH ※②2NO＋O2 = 2NO2 ⑧ ※③3NO2＋H2O = 2HNO3＋NO ⑨①＋－ 3NO2＋H2O =2H＋2NO3＋NO② ③ 以上三个反应为“雷雨发庄稼”原理 3 扩展反应有：4NO2＋O2＋2H2O = 4HNO3 4NO＋3O2＋2H2O = 4HNO3 3322↑＋2H2O 上面两个反应主要用于气体溶于水时的计算
＋－＋Cu＋4H＋2NO3=Cu2＋2NO2↑＋2H2O 或 4HNO3 光照 4NO2↑+ O2↑+ 2H2O C＋4HNO3(浓 △
2↑＋4NO2↑＋2H2O 浓硝酸见光易变黄的原因
催化剂
高温高压 ※⑤3Cu＋8HNO3(稀) = 3Cu(NO3)2＋2NO↑＋4H2O⑥N2＋3H2
＋－＋2NH3 3Cu＋8H＋2NO3=3Cu2＋2NO↑＋4H2O 合成氨反应是人工固氮的主要途径 ⑦NH3＋HCl = NH4Cl⑧NH4Cl
＋＋ △ NH3↑＋HCl↑ △
NH3＋H = NH4（水溶液中）补充：NH4HCO3 NH3↑+H2O+CO2↑
※⑧NH4Cl＋NaOH NaCl＋NH3↑＋H2O NH4＋OH 所有的.铵盐都能与碱作用放出氨气，可利用此反应鉴别铵离子。 △ 氨气与酸均能反应生成铵盐，且与挥发性酸铵盐受热都易分解，但并不是所有的铵盐 （如浓HCl、浓HNO3）相遇时空气中有白烟 都分解出氨气，如NH4NO3、(NH4)2SO4△ △ ＋－ NH3↑＋H2O ※⑧2NH4Cl＋Ca(OH)2 CaCl2＋2NH3↑＋2H2O
实验室制氨气，此反应为固体反应，不能写成离子方程式。
催化剂☆⑨4NH3＋5O2△ 4NO＋6H2O氨的催化氧化反应，工业制硝酸的第一步。
注：带“※”的反应为重要反应，必须熟记；带“☆”的反应只需了解。 4
篇13：9年级英语作文春节
I got up very early today - today is the first day of the year. The first thing a child can do is to put on his new clothes and go to the neighbor's house for a red envelope. But before you ask for a red envelope, be sure to congratulate yourself on your wealth and good health. My friends and I went to ask for a red envelope, and ran for a long morning, but it was tiring, but the money we paid for it was quite good.
During the Spring Festival, firecrackers should be set off to show happiness. The sound of firecrackers was heard in the early morning, and the whole village was busy. We are all familiar with the smell of firecrackers, which can smell like Chinese New Year. The grown-ups were gathering in the air to talk about their children, to talk about work, to get up, to play mah-jongg, to play CARDS, to say that the first day of the year was not a bet. In the afternoon, I went to buy a fireworks display with my friends. Even if our new clothes get dirty, we don't care, just have fun.
At night, the scene is very different from the day: it's as busy as the day, but it's all fireworks. “Feng!” “Feng!” Beautiful fireworks burst into the sky, and many people came to watch the fireworks, and few people slept late at night. I played hide and seek with my friends, and I was very happy with the moon and fireworks.
At 10 o 'clock in the evening, my family and I went upstairs to set off fireworks and eat zongzi and rice cakes. According to our custom, we should eat rice cakes and zongzi during the Spring Festival. I like rice dumplings best. Because there's my favorite filling -- it's a mixture of peanuts, beans, meat, dried mushrooms and some spring Onions. We eat zongzi and watch the fireworks, it's so beautiful!
I'm so happy for the Spring Festival! You can ask for red envelopes, firecrackers, eating zongzi and rice cakes. I wish I could go back in time!
篇14：9年级英语作文春节
Spring Festival is our most traditional festival and also a festival for every family. Prepare firecrackers, spring couplets, New Year pictures, food, lanterns and clothes. Whenever I celebrate the Spring Festival, it is my happiest time.
During the Spring Festival, every family has to prepare a lot of things. You look at the people on the street. My mother and I went to buy New Year's goods. We bought many things, such as Spring Festival couplets. What makes me most happy is that I bought some firecrackers. My mother bought me new clothes. Arranged to buy back, we have to clean the house, mother hang lanterns in the morning to get up, dad is the Spring Festival couplet and blessing all the door, I put all dried fruit in the plate, placed neatly.
On the 30th of the year, my mother put on new clothes for me. I was so happy! In the afternoon, my father and my mother cooked a lot of my favorite food, and the whole family were happy together. After eating the family reunion dinner, the family sat together to watch the Spring Festival gala. The festival was wonderful, with small items, songs and songs and dances. The adults are making dumplings. It was nearly twelve o 'clock, and there were firecrackers outside. My father and I went downstairs with the firecracker, and when we got to the downstairs I smelled the fireworks, we set off a lot of firecrackers, and I set off a firework. Just a little bit quickly ran back, waiting for a while before to ask my father how to still have not! I'll go and have a look! Father said: “no collapse over”, I said: “I'll be careful,” I went from a point, finally lit, the colorful firecrackers like a blooming flower in the air, beautiful. After setting off firecrackers, we ate dumplings and began to pay New Year's greetings. Everyone gave me lucky money.
The New Year begins and I hope the whole family can be happy. I hope I can improve my study.
篇15：环保英语作文9年级
On September 21, this pavilion garden football field, a grand banquet started, the Mid-Autumn evening party. Though with civilization as the theme, the audience can see carefully in order to reduce the carbon dioxide of small details.
In the beautiful booth, beautiful flowers is essential. A look at carefully, the flowers on the table is all stockings flower, can be used again and again; In into the point, the moon cake on the table is waste newspapers, old cartons and other waste items, made of very fine and delicate is hard to see how old, is not a sign to remind, I really thought it was delicious cakes!
When we are not far away, in a low carbon life step into the pavilion garden of jardine matheson center and yue xiu yuan, can be found that there are a lot of low carbon in the cabinet. See, the window is what! A small green grass, wrong! Wrong! Is a piece of foam, huh? Is a bubble? Bubble, bubble white how so beautiful? Original ah, this residents waste foam clean, dry, actually the paste with green paint, brush gently on the bubble, the pit digging a hole to fill, again before it did not work to put on a few drops of leaf, plant some beautiful silk socks, a small green grass is ready! Put it on the windowsill, particularly good-looking.
Low carbon life is all around us, is serious about life, bit by bit every bit of resources, the life will be better for your attention and taken seriously!
篇16：环保英语作文9年级
My hometown is in xinmi, environment pollution is very serious. Garbage can't say more. Screen peak shopping mall, in particular, is the battlefield of garbage and human.
I came to the screen peak market, it has become the garbage around the world. Clearly several bins, people also to throw garbage elsewhere, some fruit peel and confetti and outside the garbage can. They are outside, rather than into it. Flower pool, highway fine some where there should be no waste, often love is rubbish. So, as long as there is a piece of garbage on the ground, a group of garbage will be tracking and come, so there will be a “health dead Angle”. If you arrive baz环保英语作文9年级r screen peak, will smell pungent smell. Can see such a scene: somebody walk while eating snacks, finished plate with a throw, and went away; Some people love “clean”, don't want to smell the bad smell, carelessly threw garbage into the dustbin, he threw or not in to no longer see; There are some children defecate indiscriminately, makes me sick is that there is an adult is shit. I thought: this also too not civilization, it is violate the rights of our new ones. I was just about to come forward to stop, but, for me it is only the nose, I'm still not to stop.
I think: we do so is not civilized, don't respect other people's work achievement. So, I'm going to take to prevent several people littering. Several uncle eat eggs, in a finished throw the garbage, I rushed past, with crisp naive children's uncle said: “uncle, said the teacher, can't litter.” I said, and will they throw away the garbage pick up and drop into the bin. Blush with shame, they said: “thank you, kid, we'll keep that in mind.”
In the afternoon, I stopped a lot of people to throw rubbish, was so happy in my heart. Nature has a pair of magic hands, send us a lot of gifts. We don't have the resolve to return favors, is going to destroy the nature?
篇17：环保英语作文9年级
Low-carbon living is actually very simple, as long as we don't waste, it can save some energy, nature of assets, do a good thing for the earth.
I will give you say a few things: I remember in the summer, the weather re like steamed furnace, feeling straight blaze on the earth, I hide in the home, my father and mother open the air conditioning, after a while, father transferred to 26 degrees Celsius, the temperature I said: “dad, turn off the air conditioner, fan fan also pretty cool to below.” Dad said: “you are a know how to save the boy.” So, our house is close to the energy saving and low carbon life, I'm saving energy for the nature. Another time, dad is cooking I walked over a look, ah, dad, when cooking, almost “jumped” to pan fire! I said to my father: “daddy, you fire open too big, congress give oil to ignite again.” “What you said is right, that fuel efficient, without the oil ignition.” Dad said, and hurriedly turn down the gas burner flame. One more thing, I saw my father got up and began to say to my father: “dad, today we go outside eat breakfast is good.” Dad said to me: “good, then we go to drive or walk today?” I said: “that we can't go to, because it can see the river scenery, can exercise the body, more important is that don't put the air pollution.” Father nodded smile said: “really sensible son!” With the economic development of the world, a large number of population increase, the climate is more and more serious in recent years, more and more carbon dioxide emissions, the earth's ozone layer suffered an unprecedented pollution, the world's environment has serious harm to human health and safety, so, we need to protect the global environment.
Low-carbon living is a kind of attitude, not ability, we should from saving electricity, water, carbon, saving, solar terms, this kind of small, low carbon life is we want to establish a green way of life, as long as we act, can close to low carbon life, even can achieve low carbon standards of living.
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