新概念英语第一册Lessons29-30课件

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这是一份新概念英语第一册Lessons29-30课件，共47页。
新概念英语NEW CONCEPT ENGLISHLesson 29 Come in, Amy. 教学目标：情态动词must祈使句的肯定式词汇（16个）Dust the dressing table.Sweep the floor.What must I do?Wordsshut /ʃʌt/v.关门 untidy /ˌʌn'taidi/n.乱，不整齐untidyun-前缀，表示否定；tidy adj. 整齐的，干净的happy——unhappy 不幸福的lucky——unlucky 不幸的known——unknown 未知的clothes/kləuðz/n.衣服 air/eə(r)/v.使……通风，换换空气airv. 使 … 通风，换换空气① n. 空气，新鲜空气Let’s go out and breathe some fresh air.② n. 空中，空间He likes to stay in the open air. 他喜欢在户外呆着。③ v. 晾（衣服、被褥等）；使通风Leave the trousers on the washing-line to air. 把裤子挂到晾衣绳上去晾干。wardrobe /'wɔ:drəub/n.大衣柜dust /dʌst/v.掸掉灰尘 sweep /swi:p/v.扫 EXERCISEdustardrobeshutputuntidybedroomsharpenclotheswardrobe放关闭衣柜削尖乱，不整洁衣服打扫sweep卧室listeningReadingCome in, Amy.Come in用于表达命令、请求、劝告、警告、禁止等的句子就叫做祈使句。Shut the door, please.This bedroom's very untidy.What must I do, Mrs. Jones?must情态动词，表示不可推卸的责任和义务。Open the window and air the room.Then put these clothes in the wardrobe.Then make the bed.Dust the dressing table.Then sweep the floor._____ in, Amy._____ the door, please.ComeShutThis bedroom's very _______.What _____ I do, Mrs. Jones?untidymust_____ the window and ____ the room.OpenairThen put these clothes in the ________.wardrobeThen ______the bed.make Dust the ________ table.dressingThen ______ the floor.sweepGrammar TimeI. 情态动词must表示“必须”此时可用于肯定句、否定句或疑问句，用于否定句时，mustn’t的意思是“一定不要”，而不表示“不必”。对于must开头的一般疑问句，若作否定回答，可以用needn’t，不用 mustn’t。must 与 have to 的区别两者都表示“必须”，但must 侧重于说话者的主观看法，认为有必要或有义务去做某事；have to 客观需要，含有“不得不”“被迫”之意。II. 祈使句定义：用于表达命令、请求、劝告、警告、禁止等的句子叫做祈使句。祈使句最常用于表达命令，因此在学校文法中也常称为命令句。祈使句因对象（即主语）是第二人称，所以通常都省略。祈使句的动词都为一般现在时，句末则使用句号来表示结束。Do型(即:动词原形(+宾语)+其它成分)。如:Please have a seat here. 请这边坐。有的祈使句在意思明确的情况下,动词可省略。如: This way, please. = Go this way, please. 请这边走。EXERCISE1. There is an end table in my room.(改为一般疑问句、否定句)___________________________________________2. There are two students in the classroom.(改为一般疑问句、否定句)________________________________________There are some books on the desk.( (改为一般疑问句、否定句) ________________________________________★ Complete the sentences(按要求写句子)LESSON 30What must I do？…put on / Take off yourTurn on / off the Look and write(书面表达)