My hobby is __________ all kinds of coins.A collecting B to collect 选哪个呢?

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My hobby is __________ all kinds of coins.A collecting B to collect 选哪个呢?

My hobby is __________ all kinds of coins.A collecting B to collect 选哪个呢?
My hobby is __________ all kinds of coins.A collecting B to collect 选哪个呢?

My hobby is __________ all kinds of coins.A collecting B to collect 选哪个呢?
选A collecting
这个句子是我的爱好是干什么
is后可理解为是表语.其实整体是名词,所以用ing
be to do的用法:1.表示按计划或安排要做的事.例如:
She is to be married next month.她将于下个月结婚.
2.表示“应该”,相当于should,ought to.例如:
You are to report to the police.你应该报警.
3.表示“必须”

选A,这叫动名词做表语
这里AB的区别是,A动名词表的动作是已经形成的,而且持续,B不定式表将来,还没形成
而此题,如果没有形成,则不能叫爱好。