Whether he comes or not, we will begin our party on time.
疑问词 + ever和no matter + 疑问词的区别.
①疑问词 + ever可引导名词性从句,在主从句中要充当一定的部分.如:
Whoever breaks the rule must be punished.
You can choose whatever you like in the shop.
②疑问词 + ever还可引导让步状语从句.如:
Whoever breaks the rule, he must be punished,
Whatever you do, you must do it well.
③no matter + 疑问词只能引导让步状语从句.如:
No matter what you do, you must do it well.
No matter who breaks the rule, he must be punished.
when和where引导的同位语从句与定语从句的区别.
when 和where前面的名词若是表示时间、地点的名词,则when和where引导的是定语从句,否则则为同位语从句.如:
They put forward the question where they could get the money.
This is the place where the accident happened.
2、名词性从句中主句和从句的时态一致
宾语从句中主句和从句的时态保持一致,但如果从句中表示提示的是客观现象,虽然主句是过去时态,从句仍用一般现在时.如:
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