状语从句讲解讲义 2023届高考英语语法一轮复习

状语从句 I. 功能：在句中作状语，修饰动词、形容词或副词，也可修饰整个句子。 II. 分类： 1.时间状语从句 引导词：When, as, while, before, after, since, till(until), once, as soon as( immediately), hardly … when…, no sooner … than…, the moment（the minute, the instant，the day, the year）, every time, next time 等 考点1：区分when, while, as (1) _______ I was walking down the street, I noticed a police car in front of the bank. (2) _______ he finished his lecture, people stood up and applauded. (3) I like football _________ my brother likes basketball. (4) I was walking on the street _______ I came across an old friend. (5) We were about to set off _________ it began to rain. (6) He had just finished the work _________ the doorbell rang. (7) We were on the point of driving away _______ the policeman signed us to stop. (8) It was foolish of you to take a taxi ________ you could easily walk there. (9) ﹡_______ your proposal sounds great, I don’t quite agree with you. (10) _________ time goes by, we become mature. 总结：1. while 后跟表示持续性动词，多用进行时态。 eg. He visited lots of tourist destinations while he stayed/was staying in Beijing. 2. while 位于句中，表示“而”，有对比的含义。 3. while 位于句首，引导让步状语从句，相当于 although/though. 4. when的固定句型 ① be doing when sb. do sth. ② be about to do when… ③ be on the point of doing sth. when… ④ had done sth. when sb. did. 5.as 引导时间状语从句，表示“随着”。 考点2：区分till/until I waited until/till he came back. I didn’t leave until he came back. 结论： (1) 肯定句中：主句动词是延续性的. (2) 否定句中：主句动词是短暂性的. (3) till不可以放在句首： (4) not… until句型中的倒装和强调： You cannot leave until your work is finished. ＊倒装句→ Not until your work is finished can you leave. ＊强调句→ It is not until your work is finished that you can leave. 考点3：区分before 和since (1) We had sailed four days and four nights _________ we saw lands. (2) __________ I could say a word, he left without saying goodbye. (3) It will be a year __________ we meet again. (4) It won’t be long __________ he comes back. (5) Where have you been _________ I last saw you? (6) It is three years ___