高考英语一轮复习课件 状语从句轻松学专题专解 (共12张).pptVIP

九种常用的状语从句及其常用的连接词 时间状语从句 地点状语从句 原因状语从句 条件状语从句 让步状语从句 结果状语从句 目的状语从句 方式状语从句 比较状语从句 一.时间状语从句 as表示“当…的时候”, 往往和when/ while通用, 但它着重强调主句与从句的动作或事情同时或几乎同时发生。 （1）as、when、while用法。 when （at or during the time that ）既可以表示在某一点的时候, 又可表示在某一段时间内, 主 句与从句的动作或事情可以同时发生也可以先后发生。 while意思是“当……的时候”或“在某一段时间里”。主句中的动作或事情在从句中的动作或事情的进展过程中发生, 从句中的动词一般要用延续性动词。在when表示a period of time时, 两者可以互换 （2）引导时间状语从句的连接词除上述外还有： ①till, not … until …, until, before, since ★Don’t get off the bus until it has stopped. ★ He waited for his father until（till）it was twelve o’clock. ★ It will be five years before he returns from England. ②hardly / scarcely … when, no sooner … than, as soon as 表示“一……就” ★ As soon as I have finished it , I’ll give yu a call. ★ We had hardly got / Hardly had we got into the country when it began to rain. ★ No sooner had he arrived / He had no sooner arrived than she started complaining. ③directly, immediately, the moment, the minute that… 一……就 He made for the door directly he heard the knock. ④each time, every time, by the time. Each time he came to my city, he would call on me 注意：表示未来情况, 主句用将来时, 从句用现在时。 2、让步状语从句 （1）although与though可以引导让步状语从句, 不能与but连用, 但可以与yet连用。 Although they are poor,（yet）they are warm-hearted. （2）even if或even though引导让步状语从句, 表示“即使”, “尽管”。 I’ll get there even if（though）I have to sell my house to get enough money to go by air. （3）no matter后接上who、what、where、how等疑问词, 也可以在这类疑问词后面加上ever构成whoever、whatever、wherever、however等。 Don’t trust him, no matter what / whatever he says. Child as （though） he is, he knows a lot. Much as I like it, I won’t buy. Try as he would, he couldn’t lift the heavy box.. 3、原因状语从句 because, for, as, since, now that （1）表示不知道的原因时用because,即说话人认为听话人不知道, 因此because从句是全句最重要的部分, 通常它被置于主句之后。 You want to know why I’m leaving? I’m leaving because I’m full. for虽然表示不知道的原因, 但其语气较because要弱得多, 是可说可不说的话, 它只能置于主句之后, 这时, for是并列连词。如果不是因果关系, 而是对前面主句的内容加以解释或推断时, 只能用for。如：It’s morning now, for the birds are singing.（很显然, 鸟叫不可能是“现在已是早上”的原因。） （2）表示已经知道的原因时