1、Unit 3 Safety 单元归纳复习公刘中学杨萍【观察领悟】仔细观察例句，体会祈使句的用法，并写出它们的构成。1.Try to move your fingers.(_+其他)2.Be quiet,please.(_+表语)3.Let me help you.(_ sb.+_)4.Dont play in the street.(_+do sth.)答案:1.动词原形 2.Be 3.Let；动词原形4.Dont5.No smoking,please.(_+n./doing sth.)6.Use your head and youll find a way.(祈使句+_+简单句)7.Neve
2、r play with fire.(_+动词原形)答案:5.No 6.and 7.Never【探究总结】一、定义用于表达说话人的意愿、请求、叮嘱、命令、建议等的句子叫做祈使句。二、构成(一)肯定形式Be动词原形Let+宾语+动词原形(二)否定形式1.Do型和Be型：其否定形式都是在句首加_构成。例如：Dont open the window.不要打开窗户。2.Let型：(1)在let前加Dont构成。例如：Dont let the children play with knives.不要让小孩玩刀子。Dont(2)用“Let sb.+_+动词原形”结构。例如：Let him not sing
3、in the classroom.让他不要在教室里唱歌。3.Never型：(1)_。表示劝告，意为“不要”。例如：Never swim in the river.决不要在河里游泳。(2)_+其他。多用于公共场合的警示语，意为“禁止”。例如：Never parking here.这儿禁止停车。notNever+动词原形Never/No+名词/动名词(三)反意疑问句形式1.一般由_构成反意疑问句。例如：Dont tell anyone about it,will you?不要告诉任何人这件事，好吗？2.Lets的反意疑问句用_；而Let us/me的反意疑问句用_或_。例如：Lets go to
4、the park tomorrow,shall we?让我们明天去公园吧，好吗？will you/wont youshall wewill youwont you【实战演练】.用所给词的适当形式填空1._(look)out!A car is coming.2.Its an important meeting._(not)be late.3.We can see the sign in public.It means no _(smoke).4.Lets not _(say)anything about it.5.Never _(talk)in the reading room.答案:1.Loo
5、k 2.Dont 3.smoking 4.say 5.talk.句型转换1.Turn on the TV,please.(改为否定句)_ _ _ the TV,please.2.Shall we have a cup of coffee?(改为祈使句)_ _ a cup of coffee.3.Dont give up your English.(改为反意疑问句)Dont give up your English,_ _?答案:1.Dont turn on 2.Lets have 3.will you4.If we dont get up at 7:00 tomorrow morning,we
6、ll be late for the meeting.(改为祈使句)_ _ at 7:00 tomorrow morning _ well be late for the meeting.5.Close your eyes,please.(改为一般疑问句)_ _ _ close your eyes?答案:4.Get up;or 5.Will you please本单元以“安全”为主线，围绕这一主线谈论了如何描述事故及在各种场合我们需要注意的安全规则。所以，本单元习作重点是“如何描述各种场合下的安全规则”，这也是单元测试和中考等试题中常考的话题作文之一。【习作在线】近年来，不断有学生在学校发生安
7、全事故。那么我们在学校需要注意哪些安全问题呢？请结合你所了解的知识写一篇题为“Safety rules at school”的英语短文，来帮助那些缺乏这方面知识或对这些方面不够重视的同学。要求：1.词数：80100个；2.字迹工整，语言流畅，表达正确，逻辑清晰。_【佳作鉴赏】Safety rules at schoolIts important for us to keep safe at school.To be safe,we must follow these safety rules at school.First,dont crowd when we go upstairs or d
8、ownstairs.We may hurt ourselves by falling off steps.Second,be careful with hot water or we may scald(烫伤)other classmates.Dont drink cold water,especially after sports.Its bad for our health.Third,never leave school alone at night unless our teacher allows us to do it.Finally,no smoking or drinking
9、at school.Teenagers are not allowed to do that.Keep these rules in our minds,and well be safe at school.1.(2012遂宁中考)Its reported that a car _ happened last night and many people died in it.A.accident B.activityC.attention【解析】选A。本题考查名词词义辨析。由后文“many people died in it”可知是发生事故，故选A。2.(2012吉 林 中 考)I argue
10、d with my best friend yesterday.She is angry with me now.The underlined part means“_”.A.is mad at B.is worried aboutC.is surprised at D.is strict with【解析】选A。本题考查形容词短语辨析。be angry with sb.意为“生某人的气”。be mad at sb.生某人的气；be worried about担心；be surprised at对感到惊讶；be strict with对要求严格，故选A。3.(2012河北中考)_ somethi
11、ng wrong with my bike.Can I use yours?A.It is B.It wasC.There is D.There was【解析】选C。本题考查固定句式。There is something wrong with.意为“有毛病了”。句意：我的自行车有毛病了。我可以用你的吗？故选C。4.(2015陕西中考)_ on the grass,or it will“cry”.A.To walk B.Not to walkC.Walk D.Dont walk【解析】选D。本题考查祈使句的用法。句意：不要践踏草地，否则它会哭的。根据句意应该使用祈使句的否定形式，故选D。5.(2012盐城中考)Jack,you seem to be _.Yes.Its 8:20 now and my train leaves in ten minutes.A.in a hurry B.in fearC.in safety D.in silence【解析】选A。本题考查短语辨析。in a hurry“急忙地”；in fear“处于恐惧之中”；in safety“处于安全状态”；in silence“保持沉默”。根据答语“是的。现在八点二十分了，我的火车十分钟之后就要离开了。”可推测出前句话的意思是“杰克，你似乎很着急。”，故选A。课 堂 小 结
