第十七章状语从句 知识点 1 状语从句的分类 知识点 2 时间状语从句的用法 知识点 3 地点状语从句和条件状语从句的用法 知识点 4 原因状语从句和让步状语从句的用法 知识点 5 比较状语从句和方式状语从句的用法 知识点 6 目的状语从句和结果状语从句的用法 知识详单 知识点 1 状语从句的分类 状语从句 连词 时间 when, while, as,since ,till, until, before, after, as soon as, no sooner… than, hardly(scarcely)… when, the minute, the second,every( each time) 地点 where, wherever, everywhere 条件 if, unless, as(so) long as ,in case 原因 Because, since, as, now that, seeing that, in that, considering that 让步 Though, although, even if(though),。,whatever, wherever, whoever, however. no matter+ wh- 比较 As…as…, (not) the same.,not so...。,than 方式 as, as if(though) 目的 so that, in order that, in case ,for fear that, lest 结果 so that, so…that, such... that, but that 知识点2 时间状语从句的用法 从属连词 用法 例句 While “与……同时,在……期间”,从句常用延续性动词或表示状态的词 Don’t talk loud while (as)others are working.别人工作时,请勿大声说话。 When “当……时”,表示主句的动作和从句的动作同时或先后发生,从句的动词可用延续性动词,也可用非延续性动词 It was raining when we arrived.我们到达时,天正下着雨。 when you read the poem a second time, the meaning will become clearer to you.当你再读一遍这首诗, ,你就更清楚它的含义。 As “正当,一边·····一边,随着”,表示两个动作同时发生或某事发生时,另一个动作发生了 As time went on, his theory proved to be correct.随着时间的推移,他的理论被证明是正确的。 Till/until 用于 肯 定 句时,表示“直到……为止”,主句必须为延续性动词;not.. .until/till 表示“直到……才”,主句常用短We shall wait until/till he comes back.我们将一直等到他回来。 I didn't leave until/till she finished her homework.直暂性动词 到她完成作业.我才离开。 Since “自……以来”,主句用一般...