中考英语语法讲解课件-从句综合讲解.pptVIP

You are copying when I teach You were copying when I taught I will leave as soon as he arrives I would leave as soon as he arrived The train had left before I arrived at the station After the train had left, I arrived 1、as 1、因为,可引导原因状语从句 (because/ since/ for/ as都可引导原因状语从句) 例:As he wasn’t well, I went there along.因为他不舒服,我自己去那儿了. 2、conj 同时强调 “一边…一边”, 可引导时间状语从句(as/ when / while 的详细区别,见 when的讲解) 例:He song as he went alone.他边走边唱. 3、as soon as….一…就…,引导时间状语从句 例: He got on the train as soon as he got to the station.他一到车站就登上了火车. 4、as…as…和…一样 例:He is as tall as his father. 他和他的爸爸一样高 5、as if就象,常用于虚拟语气.例: She looks as if she were drunk.她看上去好象喝醉了. even if =though=although=even though即使,连接让步状语从句 例: He improves himself in English little even if he studies hard.即使他学习很努力,英语仍少见提高 as if 虚拟语气连接词.好像,活似 例: The old man runs very fast as if he were a young man.这个老人跑得很快好像是个年轻人一样(as if引导的特殊虚拟语气. 主句正常时态 as if+ 主+过去时/were) 题: You will do much better __ you are more careful with your spelling. A if B before C although D unless 题:–Come and join us, Jimmy! -- I am sorry, but I am really busy now. if I __ time, I would certainly go. A. will have B. have had C. had D. have 解析:如果我现在有时间,我一定去,(表明我现在没有时间,和现在相反,现在时的虚拟语气) 3、what 讲解:1)特殊疑问词----例:What is he? 他是干什么的？ 2)连接宾语从句---例: I believed what he told me 我相信他告诉我的事(引导宾语从句)。 3)后接不定式---例:I don’t know what to do. 我不知道该做什么。 4)引导感叹词, 句型: what +n +陈述句!--- how+形容词+陈述句! 例:What a beautiful girl she is! 她真是个漂亮女孩！--How beautiful she is! 4.when(adv)何时，什么时候；当……的时候 (conj)当……时 讲解:1)特殊疑问词---例: When did you come here? 你什么时候来的？ 2)连接宾语从句---例: I don’t know when the plane takes off.我不知道飞机何时起飞 3)连动词不定式---例:I don’t know when to leave for London. 我不知道何时动身去伦敦 4)连接状语从句---注意三类从句,注意主从句发生时间和相对应的时态(必考内容!例句背) 5)连接定语从句 例:It happened on the day when we began our new term. 事情发生在新学期的第一天 5.whether(conj)是否 讲解：whether是连词，有两个意思,分别引到不同的从句 1)表示是否引导宾语从句=if 例:I don’t know whether he will come. 我不知道他是否会来 2) 表示是否---引导动词不定式(此时if不能这样用) 例: She hasn’t