2019_2020学年高中英语Module2TrafficJamSectionⅢGrammar——祈使句教案（含解析）外研版必修4.docx

Section Grammar祈使句语 境 自 主 领 悟 先观察原句Dont bring your cellphone to school.Never forget each of us is the master of the earth.Give me a ring as soon as you get home.Write to me as soon as possible，will you？Lets live a lowcarbon life，shall we？Let us take care of the house while you are away，will you？You，girls，clean the desks; you，boys，sweep the floor.Dont stay outside at night，will you？Do put your heart into your studies before the coming exam.后自主感悟1.句为否定祈使句，句为肯定祈使句。肯定祈使句以动词原形开头，否定祈使句以Dont或Never开头。2.由 句可知，Lets引导的祈使句的反意疑问句用shall we; Let us引导的祈使句的反意疑问句用will you。3.由句可知祈使句的反意疑问句通常用will you。4.句中，在祈使句前可加you 或do对句子表示强调，以加强句子的语气。1祈使句的定义表示命令、请求、劝告、警告或禁止的句子叫祈使句。祈使句的主语一般为you，通常省略，谓语动词使用原形，句末用感叹号或句号。Be quiet，please.请安静。(请求)Go and wash your hands.去洗手。(命令)Watch your steps.走路小心。(劝告)Look out! Danger！小心！危险！(警告)Keep off the grass.勿践踏草坪。(禁止)2祈使句的形式肯定结构(1)Do型(行为动词原形开头)Follow the rules of the road.遵守交通规则。This way，please. Go this way，please.请这边走。(在意思明确的情况下可省略动词)(2)Be型(系动词be开头)Be sure to get here before nine.一定要在九点以前到这里。(3)Let型(Lets/ Let sb.动词原形)Lets have a meeting this afternoon.今天下午我们开个会吧。Let me have a try if you dont want to.如果你不想，让我试一次吧。否定结构(1)Do型和Be型的否定式都是在句首加Dont或Never构成。即：Dont / Never动词原形。Dont be late tomorrow.明天不要迟到。Never put off what you should do till tomorrow.今日事今日毕。(2)Let型祈使句的否定式有两种Dont let sb./sth.do.; Lets not do.。Dont let the children play in the street.别让小孩在街上玩耍。Lets not waste time.咱们别浪费时间了。No名词或动名词此类否定祈使句多表示禁止。No smoking！禁止吸烟！No photos in the room.该房间不许拍照。即时训练1单句语法填空Always keep (keep) in mind that our main task is to get this company running smoothly.Every day read (read) a proverb aloud several times until you have it memorized.Dont make (not make) any noise in the reading room.3祈使句的反意疑问句(1)祈使句为肯定句，其反意疑问句用will you/ wont you?Come to have dinner with us this evening，will/wont you? 今晚来和我们一块儿吃饭，好吗？(2)祈使句为否定句，其反意疑问句用will you?Dont smoke in the meeting room，will you? 不要在会议室抽烟，好吗？(3)Let开头的祈使句构成反意疑问句时，除Lets开头的用shall we外，其他均用will you。Lets take a walk after supper，shall we？我们晚饭后散散步，好吗？Let us go swimming，Mum，will you?妈妈，让我们去游泳，行吗？即时训练2写出下列句子的反意疑问句Come here next Sunday，will/wont you?Weve been working for two hours.Lets stop and have a rest，shall we?4祈使句的强调形式常在谓语动词前加上do或称呼语表示强调或加强命令。Do be careful next time!下次一定要仔细！Mary，come hereeverybody else，stay where you are.玛丽过来，其他人都别动！即时训练3单句语法填空Do put your heart into your studies before the coming exam.David, dont close(not close) the window , please!.单句语法填空1Work hard，and you will get promoted.2Let us take care of Grandma，will you?3Dont speak(not speak) with mouth full of food.4One more hour，and we will get(get) everything ready for the taking off.5Our English teacher is ill.Lets go and see him after school，shall we?6Give(give) us ten years and just see what our country will be like.7Li Ming，read(read) the texteverybody else，listen carefully and see whether his pronunciation is correct.8Dont drink when you drive a car，will you?9Try(try) your best and you will make progress sooner or later.10Lets go (go) out for lunch after workits my treat.单句改错1Making what youre doing today important, because youre trading a day of your life for it. MakingMake2Lets try to find a solution to this problem, do we? doshall3Please not look outside. Look at the blackboard. not前加do或notdont4When youve finished reading that book, dont forget to put it back on the shelf, do you? dowill5Turn right at the second crossing, you will see the school opposite a hospital. TurnTurning或逗号后加and.完成句子1刚开始时，要尽可能多地收集你所需要的信息。At the beginning, collect as much information as possible2别人在工作时，请别高声谈话。Please dont talk so loud while others are working.3多读书，你就会变得越来越聪明。Read more books，and you will become cleverer a