高中英语一轮复习---状语从句课件(共45张PPT)

状语从句 What are “ Adverbial Clauses”? 在主从复合句中修饰主语中的动词、 形容词、副词等的从句叫做 “状语从句”。分类如下： 状语从句 1. 时间状语从句 2. 地点状语从句 3. 原因状语从句 4. 条件状语从句 5. 让步状语从句 6. 目的状语从句 7. 结果状语从句 8. 方式状语从句 9. 比较状语从句 1) 常用连词如下：as, when, while, till / until, not … until, before, since, after等。 1. 时间状语从句 while, when, as辨析 While：引导的时间状语从句只指一段时间，强调某一段时间内，主从句动作同时发生。从句动词常是延续性的 When：既可以指一个时间点,也可以是一段时间，可表示主从句的动作同时或先后发生。从句动词可以是延续性的，也可以是非延续性的。 As：强调主句﹑从句动作相并发生,译为”一边…一边…”或“随着” 1._______he returned , his wife was cooking. 2._______he was reading, his wife was cooking. 3.We talked happily_____we walked along. 4.__ time goes by, it's getting colder. When While as As 当主句是非持续性动词，从句的谓语动词是持续性动词时，when,while,as可互相替换 _______________we were still ，the teacher came in. While/when/As laughing 另外, when/while还作并列连词,连接并列分句, while表示 “而,可是”如: I like reading ______my wife enjoys watching TV. when表示 "突然性"“就在这时” 在下列结构中，表示某件事正在发生或刚刚发生，另一动作同时发生。 1. be about to do… when… 2. be doing… when… 3. be on the point of doing…when… 4. had done… when… while . ________________________(我们正要开始就在这时start)it began to rain. 2.____________________________ mom came in. 3.I had just got home ____________________(就开始下雨） 1.We were about to start when 我正在玩电脑游戏就在这时妈妈进来了。 I was playing computer games when when it began to rain till 只能用于肯定句中，until既可以用于肯定句，也可以用于否定句。 e.g. I will be here till/until he comes back. I won’t know where he is until I get a letter from him. until/till 区别 “延续的动词（肯定式）+until ”表示“直到…为止” 1.我一直睡到闹钟响为止. _________________________. “非延续性动词（否定式）+until ”表示“直到┅才”2.直到他完成工作才上床睡 ______________________________________________ I slept until the clock alarmed He didn’t go to bed until he finished his work. 注意: not until 在句首时要倒装 Not until he saw it himself___________ （他才相信） did he believe it. It’s/will be +一段时间 before+一般现在时 表示过了多久才 It’s/will （not) be +一段时间 before+一般现在时 表示没过多久就 it ’s been+一段时间 since +一般过去时 before/since 用法 It will be a long time before we meet again. It will not be a l