are,am,is意思都是:是,什么时候该用什么?
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1.am与第一人称一起用,如: I am a doctor. I am young.
2.is与第三人称一起用:如:He is a doctor.She is young.The desk is old.
3.are与除以上几个人称以外的词一起用,如:你,你们或者复数的主语一起用。如:you are a doctor.We are young. The books are old.
be是原形,用在助动词或其它词后面。如:you should be careful next time.
I want to be a doctor when I grow up.
望采纳
2.is与第三人称一起用:如:He is a doctor.She is young.The desk is old.
3.are与除以上几个人称以外的词一起用,如:你,你们或者复数的主语一起用。如:you are a doctor.We are young. The books are old.
be是原形,用在助动词或其它词后面。如:you should be careful next time.
I want to be a doctor when I grow up.
望采纳
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