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)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 you’d better go to see a doctor.　 you’d 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。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：　　 You’d better go to hospital at once.你最好立即去医院看病。第 1 页


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 like to 后接动词原形，would 常和主语缩写为“主语＋
’d”。　　例如：I’d like a cup of tea. 我
想喝一杯茶 　　He’d like。to see a film. 他
想看电影。第 2 页
　　 Tom, you’d 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 disturbs others but also does great harm to people’s 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 only…but 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 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：Let’s stop to have 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 let’s 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


定句：　　在would 后
加not，意为不愿意做……，would not 缩写为wouldn’t。例如：　　I wouldn’t 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l　Would you 。　例如：ike 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 Yes,用I’d like/love to ;否定回答vI’d like/lo用e to ,but…例如：—Would you like to see a film？你愿意去看电
影吗o—Yes, I’d l？ve to. 是的，我愿意。若
邀请某人吃(喝)东西，肯定回答Y用es, please. 否定回答aNo, th用nk you.例如：—Would you like some tea ?你
想喝茶吗a—No, th？nk you. 不，
谢谢w　　【注意】。ould like 无
人称和数的变化精句式。练I. 句型
转换，每空词。一1. “My grandpa doesn’t like coffee or coke.” said 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_)Tianlin__句_________ ________________________ the party for three years.3. It is silly that you don’t forgive others for their faults. (改
为同义_)It is silly 句___________ you ________________________ forgive others for their faults. 4. The boy is too young to go to school.(改
为同义)The boy 句________________________ ____________ to go to school.5. She has lived in Canada for three years. (改
为同义l)She has 句ived in Canada ____________ three years ____________. 6. I like English better than French. (改
为同义)I 句____________ English ____________ French.第 3 页
(2)否


为同义r)I check ca句efully ________________________ to catch all the mistakes. 8. I went to bed after I finished my homework. (改
为同义_) I _____句______ ____________ to bed ____________ I finished my homework.9. He asks, “Can I park my car next to it?” (改
为复合a) He 句sks __________ __________ __________ 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，完子句成。1.我们
应该尽一切努力保护环境 We。should do ______________________ to protect the environment.2.水污染导
致我们城市切断供水rThe wate两天。 pollution caused our city to______________________ its water supply for twodays.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。___________ said than___________.6.行动
胜于言辞lWe。l, ___________ speak louder than ___________.7.我
想阻止她抓那个球，但是她没aI w有听到。nted to ___________ her ______________________ the ball, but she didn’t hear me.8.打电
脑游戏不但耗费时间，而且有害健康iPlay。ng 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。第 4 页
7. I check carefully so that I can catch all the mistakes. (改


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 。A: It is such a lovely day. I love sunshine.B: 1 .多余选项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: It’s pretty cold and it often snows in winter. 4 .A: A lot like the weather here, 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. What’s the weather like in winter?C. Is that true?D. I don’t think so.E. Thank you for your kindness.F. Yes, it’s really a nice and bright day.G. What about your hometown?参考答案I.句型
转换，每空n词。1. his; neither; 一or 2. has been in 3. of; not to 4. isn’t old enough 5. since; ago6. prefer; to 7. in order/ so as 8. didn’t go; until 9. if /whether he can 10. don’t; canII.根据汉
语提示，完p句子。1.everything 成ossible /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第 5 页
My uncle ___________ ______________________ ___________ his hometown for quitea few years. III. 补全


对话。1-5 FABGC第 6 页
9.instead of/rather than10.has been away fromIII. 补全


第 7 页