七年级英语下册Unit4Don’teatinclass语法攻关素材.docx

unit 4语法攻关祈使句祈使句是常常用来表达命令、请求或者建议的句子。主语通常省略，并且谓语动词用原形。句尾用感叹号或句号，读的时候用降调。下面我们来学习有关祈使句的几种句式。肯定句 1. Be型 Be +表语(名词或形容词) +其它成分. 如：Be a good boy, Tom! 做个好孩子, 汤姆！Be quiet, please! 请安静！2. Let型 Let +宾语+动词原形+其它成分. 如：Let Mary sing Gangnam Style. 让玛丽唱唱江南style。Let me have a look. 让我看一看。3. Do型 动词原形 (+宾语) +其它成分. 如：Stand up! 起立！Put your hands up! 举手！ 否定句 1. Be型和Do型的否定句式结构通常是在肯定结构前加Dont。如：Dont be late next time! 下次别再迟到了！Dont talk to me! 别和我说话！ 2. Let型的否定句式有两种：“Dont + let +宾语+动词原形+其它成分.”和“Let +宾语+ not +动词原形+其它成分.”。如：Dont let him go./ Let him not go. 别让他走。3. 以No开头，后面跟动词-ing形式，用来表示禁止。如：No parking! 禁止停车！No smoking! 禁止吸烟！No swimming! 禁止游泳！祈使句和其他句子连用，常见的结构有：1. “祈使句+ and +简单句”表示“就”，如：Take a shower, and youll be relaxed. 洗个澡，你就能放松。2. “祈使句+ or +简单句”表示“否则”，如：Be careful, or youll get hurt. 小心点，否则你会受伤的。另外，为了使祈使句的语气变得更委婉、客气，可以在句首或是句尾加上please一词。如果在句尾加please，则需在please前加逗号。如：Please look at the blackboard. 请看黑板。Sit down, please. 请坐。中考真题单项选择1. _ get off the bus before it stops. A. Dont B. Doesnt C. Didnt2. Hurry up, _ finish your homework! A. orB. butC. andD. while3. Mary, put on your coat, _ youll catch a cold. A. and B. or C. so D. but跟踪练习I. 单项选择()1. Our teacher says, _ talk in class.A. Stop B. Dont C. Cant D. No()2. _ in bed. Its bad for your eyes (眼睛).A. Not to read B. Dont readC. Dont to read D. Not read()3. _ when you cross the river.A. Dont care B. Careful C. Be careful D. To be carefulII. 用括号内所给词的适当形式填空。1. _ (call) me at 5607899.2. _ (not go) to bed too late!3. _ (come) to my house at 3:00 p.m.4. Please _ (not speak English) here.III. 汉译英1. 咱们去午饭吧。_2. 车不要开得太快。_3. 不要说话，否则老师会生气的(be angry)。_答案中考真题 1-3 ACB跟踪练习I. 1-3 BBC II. 1. Call 2. Dont go 3. Come 4. dont speak EnglishIII. 1. Lets go