I want to ask whether I can use all the tanses after whether/if.
I do not know whether/if He has made some coffee for me .
I do not know whether/if he made some coffee for me yesterday.
I do not know whether/if he will make some coffee for me tomorrow.
I do not know whether/if he is going to make some coffee for me.
I do not know whether he will have done his homework by this time tomorrow.
Are they all correct ?
And what about past simple tense ?
I did not know whether/if
What tenses can I use after whether/if when I use past simple tense ?
whether/if
Moderator: Alan
- Alan
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Re: whether/if
All of your example sentences are correct.
However, the same tenses will not necessarily be possible after a past tense main verb.
However, the same tenses will not necessarily be possible after a past tense main verb.