Unit 4 语法教案及练习2022-2023学年牛津译林版英语八年级上册

八上Unit 4 语法教案及练习 祈使句、用should和had better提建议 一、祈使句 1.含义 →用来提建议，告诉别人应该做什么，表达命令、请求、要求等语气。 2.构成 →动词的原形在句首，偶尔为了强调，也可以保留主语，谓语动词没有任何时态和人称的变化。 eg.请出去。 Go out please. 彼得，现在起床! Peter, get up now！ 3.否定句 →do not/don't+ V原形 eg.请不要出去。 Don’t go out please. 彼得，现在不要起床! Peter, don’t get up now！ 4.其它句型 (1) 让某人做某事 →let+sb+动词原形 否定：let+sb+not+动词原形 eg.让我们打篮球吧！ Let us play basketball！ 否定：Let us not play basketball！ (2) be+形容词 否定：Don’t +be+形容词 eg.汤姆，你要耐心点。 Tom，be patient. 否定：Tom，don’t be patient. 注意：区分let's与 let us let us可以缩写为 let's，但有时两者表达的含义不同 ①“let's do”，意为“让我们……”,常包括听的人在内； ②“let us do”，意为“让我们……”,常不包括听的人在内； eg.路西，让我们一起去电影院吧。 Lucy,Let’s go to the cinema.(我们包括Lucy) 妈妈。让我们出去玩吧。 Mun,let us go out to play.(我们不包括Mum) 二、should 和 had better should 和 had better可以用来提建议，后者语气更强。 1. should是情态动词，意为“应该”，后面接动词的原形，否定形式为should not/shouldn't。 eg.我们应该好好学习。 We should study hard. 麦克不应该看太多电视。 Mike shouldn’t watch too much TV. 2.had better意为“最好”，用法相当于情态动词，后接动词原形，否定式在had better后加not。 eg.你最好按时完成作业。 You had better do the homework on time. 玛丽最好不要让李老师生气。 Mary had better not let Miss Li be angry. 练一练 A.单项选择 1. Bob has_______ friends. He often helps them. A. so many B.a little C. so much D.little 2._______late for the class next time. A. Don't be B. Not be C. Be don't D.Be not 3. You_______ buy such old clothes. A.should to not B.not should C. should not D. should not to 4. You had better_______ these balls into the basket. It's full. A. don't put B. put C. put not D.not put 5. Let's_______ waste time. We have little time left. A. not B. don't to C. to not D.not to 6._______and talk about the problem with us. A.Coming here B.Come here C. To coming D. To come here 1.A 2.A 3.C 4.D 5.A 6.B B.词汇运用 1._________（catch）the first train, he got up very early this morning. 2.Please take down all the _________ （句子）you