英语语法课件 状语从句课件.pptVIP

* * 定义: 一个____用作状语时,在语法上叫状语从句。这个句子可 修饰主句的_____._____._____ 或________状语从句 通常由一个＿＿＿引起或起连词作用的____引起或由_____. __________等引起。 分类： 状语从句可表示1) ________ 2) _________ 3) __________ 4) _________ 5) _________ 6) _________ 7) _________ 8) __________9) ________等 句子 谓语 定语 状语 整个句子 连词 词组 副词 名词词组 时间 地点 原因 目的 结果 条件 行为方式 比较 让步 连词: 一. 表示时间的状语从句可由以下连词引导: 1. when, while , as, whenever, before, after, until, till, since, ever since, once, as soon as 2. every time, next/last/each time, the first time, the moment, the minute, the instant 3. instantly, directly, immediately 4. hardly…when, no sooner…than, be about to do…when It is/ has been+一段时间+since从句 It was/ won’t be +一段时间+before从句 二. 地点状语从句: where, wherever, anywhere, everywhere. 三. 原因状语从句: because, as, since/ now that; seeing (that)由于, considering that 考虑到, not because/ that…but because/ that… 四. 目的状语从句 that(=so that), so that, in order that, in case, for fear that, lest. 五. 结果状语 so, that, so that, so…that…, such… that…. 六. 条件状语从句: if, unless, once, on condition that, as/ so long as, so far as(据我所知…), providing/ provided (that), given (that)假定, 七. 方式状语: as, as if/ though, just as, rather than. 八. 比较状语从句: than, as 九. 让步状语从句: Though, although, even if/ though, no matter, whatever, however, whether…or…, while (=though), as 用when, while或as 填空: _______________ we were talking, Mr Smiths came in. _____ they came home, I was cooking dinner. I was about to go to bed _______ I heard someone knock at t the door. 4. ________ we were watching TV, he was studying. 5. He is fat _______ his brother is thin. 6. ______ she sang, tears ran down her face. Conclusion: A: 从句为”当……的时候”,从句谓语为延续性动词,主句谓语为非延续性动词(即终止性动词), 三者可通用. B 当从句的谓语动词为终止性动词,只能用when; 表示”正在那时”, 也只能用when. .C.从句和主句的谓语动词都为延续性