1、Unit 2 Saving the Earth句式精讲精练句式精讲1. and you could see bees and butterflies dancing.see sb. doing sth. 意为“看见某人正在做某事” ，强调动作正在进行。例如： I saw him talking with a man on my way home yesterday.昨天我回家的路上，看见他正在和一个人谈话。When I entered the room, I sawherwatching TV.当我进门的时候，我看见他正在看电视。【拓展】see sb. do sth.意为“看到某人做某事”，强
2、调看到某人做过某事或经常做某事。例如：I often see him dance in the classroom.我经常看见他在教室里跳舞。I often see him help that old man do cleaning at weekends.周末，我经常看见他帮助那个老人打扫房间。2. It smells terrible.smell在此是系动词，意为“闻起来” ，后面接形容词作表语。例如：The song sounds nice. 那首歌听起来很好听。【拓展】类似 smell这种用法的词还有：feel(摸起来，感觉)；look(看起来)；sound(听起来)；taste(品尝
3、)等。例如：The food tastes delicious. 食物尝起来很美味。I feel so happy today. Mum will buy me a new bike. 我今天很高兴，妈妈要为我买辆新自行车。The blouse looks very beautiful. 那件衬衫看上去很漂亮。3. But now youd better go to see a doctor.youd better 是 you had better的缩写。had better(常简略为d better)是一固定词组，had better意为“最好” ，用于表示对别人的劝告、建议或表示一种愿望。
4、其用法有以下几点：(1) had better 后面必须跟动词原形，构成 had better do sth.句型。【注意】这里的 had不能用 have来替换。例如：Youd better go to hospital at once.你最好立即去医院看病。Tom, youd better go there today.汤姆，你最好今天去那里。(2) 主语不论是第几人称，句子不论是什么时态，都要用 had better的形式。例如：Now you(he; we) had better listen to the teacher.你(他，我们)现在最好听老师讲。4. It not only d
5、isturbs others but also does great harm to peoples hearing.(1) not only.but also的意思是 “不但而且”，连接两个并列成分，如果连接两个主语的时候，谓语动词和also后面的主语保持一致。例如：Not only my mother but also I like to go to the garden.不仅妈妈而且我也喜欢去公园。(2) 以not onlybut also 开头的句子往往引起倒装。例如：Not only did he complain about the food, but he refused to
6、pay for it.他不仅抱怨饭不好吃，而且拒绝付饭钱。5. Trees can stop the wind from blowing the earth away.stop somebody/something from doing something表示“阻止某人做某事或者阻止某事发生” 。例如：We must stop him from going swimming in the river. 我们必须阻止他去河里游泳。【拓展】stop 的其他常用搭配：stop doing sth. 停止做某事stop to do sth. 停下来去做（另外）某事例如：Lets stop to hav
7、e a break. 咱们停下来休息一会儿。The two girls stopped talking when they saw me. 那两个女孩一见到我就停止了讲话。Now lets stop reading. 现在咱们停止读书。Our teacher stopped to look at the boy. 老师停下来看了看那个男孩。6. Would you like to be a greener person?Would you like to do？是询问对方的意见，邀请或请求某人做某事的一种委婉表达方法。其用法如下：(1) 肯定句：would like 后接名词或代词；would
8、 like to 后接动词原形， would 常和主语缩写为“主语d” 。 例如：Id like a cup of tea. 我想喝一杯茶。Hed like to see a film. 他想看电影。(2)否定句：在 would 后加 not，意为不愿意做，would not 缩写为 wouldnt。例如：I wouldnt like to go to the cinema. 我不想去看电影。(3)疑问句：把 would 提到主语前即可。 例如：Would you like to go to the cinema? 你愿意去看电影吗？(4)答语：若邀请某人做某事，肯定回答用 Yes, Id l
9、ike/love to ;否定回答用 Id like/love to ,but例如： Would you like to see a film？你愿意去看电影吗？ Yes, Id love to. 是的，我愿意。若邀请某人吃(喝)东西，肯定回答用 Yes, please. 否定回答用 No, thank you.例如： Would you like some tea ?你想喝茶吗？ No, thank you. 不，谢谢。【注意】would like 无人称和数的变化。句式精练I. 句型转换，每空一词。1. “My grandpa doesnt like coffee or coke.” sa
10、id Bob. (合并为一句)Bob said that _ grandpa liked _ coffee _ coke. 2. Tianlin joined the party three years ago. (改为同义句)Tianlin_ _ the party for three years.3. It is silly that you dont forgive others for their faults. (改为同义句)It is silly _ you _ forgive others for their faults. 4. The boy is too young to
11、go to school.(改为同义句)The boy _ _ to go to school.5. She has lived in Canada for three years. (改为同义句)She has lived in Canada _ three years _. 6. I like English better than French. (改为同义句)I _ English _ French.7. I check carefully so that I can catch all the mistakes. (改为同义句)I check carefully _ to catch
12、 all the mistakes. 8. I went to bed after I finished my homework. (改为同义句)I _ _ to bed _ I finished my homework.9. He asks, “Can I park my car next to it?” (改为复合句)He asks _ _ _ park his car next to it.10. I think we can eat out today. (改为否定句)I _ think we _ eat out today.II. 根据汉语提示，完成句子。1.我们应该尽一切努力保护环
13、境。We should do _ to protect the environment.2.水污染导致我们城市切断供水两天。The water pollution caused our city to_ its water supply for two days.3.你知道印度人口比美国的还多吗？Do you know that the population of India is _ than _ of America?4.当你离开教室的时候，应该随手关灯。You _ _ turn off the lights when you leave the classroom.5.说比做更容易。_
14、said than_.6.行动胜于言辞。Well, _ speak louder than _.7.我想阻止她抓那个球，但是她没有听到。I wanted to _ her _ the ball, but she didnt hear me.8.打电脑游戏不但耗费时间，而且有害健康。Playing computer games not only takes much time but also is _.9.我想要茶而不是咖啡。I would like tea _ _ coffee.10.我叔叔离开家乡已有好几年了。My uncle _ _ _ his hometown for quite a
15、few years.III. 补全对话。根据对话内容，从方框内的选项中选出能填入空白处的最佳选项。其中有两个为多余选项。A: It is such a lovely day. I love sunshine.B: 1 . A: I hope it stays like this. B: 2 .A: Is the weather usually like this here?B: A bit hotter than today.A: 3 .B: Its pretty cold and it often snows in winter. 4 .A: A lot like the weather h
16、ere, not too hot or cold.B: I heard it rains a lot. 5 .A: Mmm, yes. It rains but not any more than other places.A. I hope so, too.B. Whats the weather like in winter?C. Is that true?D. I dont think so.E. Thank you for your kindness.F. Yes, its really a nice and bright day.G. What about your hometown
17、?参考答案I.句型转换，每空一词。1. his; neither; nor 2. has been in 3. of; not to 4. isnt old enough 5. since; ago6. prefer; to 7. in order/ so as 8. didnt go; until 9. if /whether he can 10. dont; canII.根据汉语提示，完成句子。1.everything possible /our best 2.cut off 3. larger; that 4.ought to 5.Easier, done 6.actions; words 7.stop/keep/prevent, from catching 8.harmful to/bad for health 9.instead of/rather than10.has been away fromIII. 补全对话。1-5 FABGC