2023届高考英语一轮复习状语从句学案

状语从句 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 方式状语从句 目的状语从句 结果状语从句 比较状语从句 考点梳理 (一）时间状语从句 1,when 引导时间状语从句 表示 “当……地时候” John was having dinner when I saw him . 有时根据上下文,还可以表示 “在……之后”请注意下面三个句子中when的不同意思: when he came in, I was cooking dinner . 当……时 when he came in, I had cooked the dinner. 在……前 =before when he came in, I cooked the dinner. 在……之后 =after 2,注意when引导的时间状语从句中,不可以使用将来时,但可以使用一般现在时,进行时,现在完成时,表示将来的动作. 主句：----------------------------------- When you have finished your experiment ,please tidy the lab and put everything back in the cupboards . 3.When常用的几种句式 A ...be doing...when... I was thinking of this when I heard my name called . B, 用was(were)about to, was(were)going to , was(were) on the point of. He was going to throw the stone when he saw a passer-by. C, ...had just done...when..过去时.. We had just fallen asleep when the bell rang. 4. when与while when和while都可以引导时间状语分句,而且意思相同 区别 1） while从句中的动词必须是持续性的.(be stay ,wait, live等)而不能是瞬间性(arrive, come, get up, meet等); when从句中的动词既可以是延续性，也可以是瞬间性。 当when分句中的动词显持续性动词时.就可以用while来代替when. They arrived while I was sunbathing .当我正在进行日光浴时,他们到了. _____we got up ,he felt sick . A while B when C since D During 2） when 从句的动作和主句的动作可以是同时,也可以是先后发生； while 则主从句两个动作同时发生.　 When you have finished your work, you may have a rest. While he was reading, I was writing. 5..as表示时间关系.引导时间状语分句 在多数情况下,可与when交替使用,但是as通常不表示将来情况,另外as还常有 “随着……”、“一边..一边...”的含义 As the day went on, the weather got worse. He was reading the newspaper as he was waiting for the bus. 6.before The train had left before I reached station . 与before有关的句型 ①与It + be +段时间+before .译成……(之后)才 It will be five years before we meet again . ②It not be+段时间+before.译成(不多久就) It wasn’t long before he told us about the whole thing. 7.after I will tell them after you leave. 8.since , 自……以来 I have been looking forward to seeing you since I saw you last. 9.until/till Let’s wait until the