Whether it will do us harm or good remains to be seen.
(5)用it作形式主语时,whether或if都可以引导主语从句。如:
It is not clear to me whether/if he likes the present.
4.注意what/whatever;who/whoever;which/whichever的区别。试比较下列句子:
Whoever will go to the concert please signs your name here.=Anyone who will go to the concert please signs your name here.
Who will go to the concert isn’t known.=It’s unknown who will go to the concert.
He won’t believe whatever she says.=No matter what she says,he won’t believe her.
Whichhever toy you want is yours.=No matter which toy you want,it is yours.
5.注意how long/how soon/how often/how much的区别。
How long will he stay here?
他将在这里待多久?
How soon can you be ready?
你多久能准备好?
How often do you visit her?
你多长时间去探望她一次?
How much is that dress?
那件衣服多少钱?
6.当主句谓语动词表示不肯定或怀疑时,宾语从句用whether/if引导;表示有把握时用that引导。如:
I doubt whether/if he can win the match.
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