【app必威体育语法】条件状语从句的用法,英语培训学校编辑和大家分享条件状语从句的用法,请阅读下文。
1.引导条件状语从句的从属连词主要有if, unless, as [so] long as等。
如:
Don’t come unless I telephone.除非我打电话,否则你别来。
If you watch carefully you will see how to do it. 如果你仔细瞧你会看出该怎样做。
As long as you do your best,we ,11 be happy. 只要你尽力,我们就满意了 。
2.除上述从属连词外,还有的动词,尤其是其分词形式(如suppose,supposing,provided,providing等)和介词短语(如in case意为"如果"、"万一 ",on condition that等),也可用作连词表示条件。如:
In case I forget , please remind me about it.
万一我忘记,请提醒我一下。
I will come on condition (that) she is invited too.
如果邀请她来,那我就来。
He may go with us provided [ providing ] he arrives in time.
他若及时到,就可以和我们一起走。
suppose和supposing引导条件状语从句时,通常用于主句为疑问句的场合。
如:
Suppose the boss saw you , what would he say?
如果老板看到你,他会怎样说?
Supposing he does not come , shall we go without him?
他若不来,是不是不带他去?
3.条件状语从句的时态当主句为将来时态或具有将来意义时,条件状语从句通常要用一般现在吋表示将来意义,而不能直接使用将来时态。如:
I'll stay at home if it rains tomorrow.
要是明天下雨,我就待在家里。
【注】有时也可见到if you will这样的说法,但那不是将来时态,而是表示意愿或委婉的请求(此处的will是情态动词)。如:
If you will wait for a moment, i'll go and tell the manager that you are here.
请等一下,我去告诉经理说你来了。
以上3条是关于条件状语从句的用法!
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