Mike has no time to buy a gift,so he doesn't know___her birt

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Mike has no time to buy a gift,so he doesn't know___her birthday party
A.whether to take part in B.if to take part in
C.whether to join D.if to join
顺便把本题中所包含的语法句型告诉我,像whether和if的句式,

正确答案：A
原题考查用whether +动词不定式的复合结构作宾语,Whether 和if 的用法区别以及动词短语take part in or join 的区别.
take part in：参加比赛、活动
join:参军、入党,加入（某团体）
1,Whether 和if 后面都可跟宾语从句：
i.e He didn't know whethe /if we should write or phone.他不知道我们是写信好呢还是打电话好.
2,whether 后面跟动词不定式,if 不可这样用：
I am not sure whether to resign or stay on.我拿不准主意是辞职还是留任.
3、在介词后面只能用whether,不能用if.
It depends on whether the letter arrivie in time.这取决与信是否来的及时.
4.whether 后面还可以应到主语从句,if 不可以.
Whether they win or lose is all the same to me.他们是输还是赢与我都一样.
5、Whether 后面可直接用or not,if 不可这样用.
I'll be happy whether or not I get the job.
I'll be happy whether /if I get the job or not.我能不能得到那份工作都一样高兴.

This house is ______ dear,so he doesn't want to buy it.A．too He doesn't have a car .So he has to d( ) on buses 连词：as ,has ,Mike ,the ,won't ,no,buy ,car ,he ,money, buy,mother,I,to,no,my,gift,time,have,for,a连词成句,绝对好评 he has no brother_____ no sister.he doesn't have a brother__ Tom doesn't jump ________ Mike, but he runs ________.A.so hi He doesn't want to be late for school,so sometimes he has to 17._______ he has enough money to buy the house, it doesn‘t He joins ________ the music club,so he doesn’t have time to She likes Mike a lot,but she doesn't want to get married so No,Mike doesn't walk to school写出问句 He doesn't have a job .So he has nothing _________ (do) ever