文档介绍：关于条件状语从句和让步状语从句
第一页，本课件共有13页
引导状语从句的连接词有:
if, unless = if not
as long as
on condition that
in case
provided/providing (that) suppose/supposing (that)
第二页，本课件共有13页
I. if
If you work harder,you will succeed.
Work harder, and you will succeed.
Work harder,or you won’t succeed.
Working harder,you will succeed.
第三页，本课件共有13页
If 虚拟条件句
时间
If 条件句
主句
过去
had done
would/could/should/might have done
现在
did/were
would/could/should/might
do
未来
did /were
were to
Should do
would/could/should/might
do
第四页，本课件共有13页
II. unless= if …not…
We can’t write to Mary unless she tells us
her address.
We can’t write to Mary if she doesn’t tell us
her address.
III. as/so long as(只要 ) =only if
1)I will never give up learning as long as I live.
2)You may borrow the book as long as you
keep it clean.
第五页，本课件共有13页
condition that（条件是）
We’ll let you use the room on condition that
you keep it tidy.
case(万一）
You’d better take your raincoat with you in case
it rains/should rain.
VI. suppose/supposing/provided/providing
Suppose /Supposing /Provided/Providing (that) they refuse us, who else can we turn to for help?
第六页，本课件共有13页
让步状语从句
引导让步状语从句的连词有：
Although, though, as,
even if, even though,
no matter + 疑问词, 疑问词+ ever
while,
whether…or…
第七页，本课件共有13页
although, though, as ---虽然 although 常放在句首
although 不倒装
Though 可以倒装也可不用于倒装
as 必须倒装（特殊结构）
Although it was raining, the plane managed to take off.
Though it was not his fault, he took all the blame.
第八页，本课件共有13页
As: （虽然） 必须用一种特殊的倒装结构
adj./n./adv./+as+陈述语序
as he is, he isn’t diligent
as he is, he knows a lot.
as he likes it, he will not buy it.
as he might, he can’t find a job.
（注：这里的as 可以换成though)
第九页，本课件共有13页
Even if /even though ---即使
Even if you don’t like your boss, you should do your work.
Even though I might be wrong, I will go my way.
第十页，本课件共有13页