状语从句 课件 英语语法课件[精].ppt

高三英语语法
第二讲状语从句
定义:
一个____用作状语时,在语法上叫状语从句。这个句子可
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
概念
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
D. 当强调主句和从句的动作同时发生时,只能用as, 译为”一边……一边……; 随着……”
Before与after:
He Finish your homework ______ you go out to play.
had left the town the day ______ she arrived.
He had walked three days ____ he found water.
It was not long _____ he left his hometown.
I played football _____ I (had) finished my homework
Please tell her I’e _ ___ I do some shopping.
It will not be long _____ we meat each other again.
after
after
Conclusion:
1. Before作为连词, 有多种含义,必须根据上下文作出合理的判断.
2. Before与after所引导的时间状语从句中, 用现在时表示将来时.
, 主句是过去时或过去完成时;. 主句为过去时,after从句可用一般过去时代替过去完成时.
3. Before与after 还可作介词,后接名词或-ing形式.
till 与until:
1. He lived with his parents ________ he