用途广泛的一些连词
南昌十九中 宋焘
请大家注意下面这些连词,他们用途多样,意义很多,
一、when
1 . 表示时间,意思是“当……的时候”。例如:
The fire was put out when they came . 他们来到的时候,大火已经被扑灭了。
2 . 表示条件,意思是“如果……,要是……”例如:
Turn off the switch when anything goes wrong with the machine .
3 . 表示原因,意思是“既然”。例如:
How can he succeed when he won't work?
4 . 表示让步,意思是“虽然,然而,可是”。例如:
He walks when he might ride .
We have only three chairs when we need five .
二、while
1 . 表示时间,意思是“当……的时候”,“和……同时”。例如:
Please be quiet while I am talking to you .
2 . 表示让步,意思是“虽然,尽管”。例如:
While I understand what you say , I can't agree with you .
While he is respected , he is not liked .
3 . 表示对比,意思是“而,然而”。例如:
She is very diligent , while he is very lazy .
You like sports , while I'd rather read .
三、If
1 . 表示条件或假设,意思是“如果,假如”。例如:
We'll stay at home if it rains tomorrow .
If I were you , I would not go .
2 . 表示让步,意思是“虽然,即使”。例如:
I will go if I die for it .
If I am wrong , you come wrong , too .
3 . 表示时间,意思是“无论何时,当……”,相当于 whenever。例如:
If I do not understand what he says , I always ask him .
If winter comes , can spring be far behind?
4 . 表示原因,意思是“既然”。例如:
If you don't like the job , why don't you change it?
四、as long as , so long as
1 . 表示时间,意思是“达……之久”。例如:
You can keep the book as long as you like .
During the holidays , I like to stay in the countryside as long as I can .
2 . 表示条件,意思是“只要”。例如:
As long as you tell truth , I'll try to help you .
You may take this book away so long as you return it on time .
3 . 表示原因,意思是“既然,由于,因为”。例如:
So long as the weather is changeable these days , we'd better get in wheat in time .
五、since
1 . 表示时间,意思是“自从……以来”。例如:
I haven't heard from him since he left .
It is ten years since he joined the army .
2 . 表示原因,意思是“既然”。例如:
Since this method doesn't work , let's try another .
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