备战2022年高考英语二轮复习专题20-状语从句课件（50张）

(共50张PPT)
状语从句
、状语从句的类型
状语从句根据其用途可分为时间状语
从句、地点状语从句、原因状语从句、目
的状语从句、结果状语从句、条件状语从
句、让步状语从句、方式状语从句、比较
状语从句九种
时间状语从句:由when,as, while, whenever,
after, before, until /till, as soon as, since
once等连词, directly和 immediately等副
ii, by the time, every time, the moment
the minute等表示时间的短语以及no
sooner…,than或 hardly…when引导。
地点状语从句:由 where, wherever,
anywhere, everywhere等引导
原因状语从句:由 because, since,as, now that,
seeing that, considering that, in that等引导,
目的状语从句:由so, so that, in case, in order
that, for fear(that)等引导。
结果状语从句:由so(hat,so…that,such…
that, with the result that等引导。
条件状语从句:由if, unless,so/ as long as,
only if, provided, on condition that, in case,
suppose/ supposing(that等引导。
让步状语从句:由 although, though, even if/
though,as等连词,“疑问词+ever构成的
复合词,“ no matter+疑问词”或
whether.or引导。
方式状语从句:由as,ike,asif/ though,the
way等引导
比较状语从句:主要由than或as引导
二、常用关联词注意事项
1. when
1)when引导时间状语从句时,从句的动作既可
与主句的动作同时发生,也可先后发生。如:
When the family came here from Russia, they
were penniless.
When she turned off the light, she went to bed
2)when可以引导条件状语从句,意为“如果”
如:
Turn off the switch when anything goes wrong
with the machine