when is your birthday?Where are you from?请问在问句的your之前,什么时候用is 什么时候用are?

来源：学生作业学帮网编辑：学帮网时间：2024/06/08 13:50:06

关键是看后面的主语,your birthday 是单数,所以用is,如果后面是复数,例如our birthdays,那么就要用复数are,即when are our bithdays?
第二句中因为主语是you,是第二人称,固定的是are.第一句中your是形容词性物主代词,修饰核心名词birthday.

your的意思即表示单数“你的”和复数“你们的”，所以就得看Your 后面的名词是单数还是复数，是单数用is, 是复数用are.
比如： Your book is here.你的书在这里
your books are here.你们的书在这里

人称和对象。第二人称和复数形式为are，单数形式和第三人称用is。很明显第一个句子的对象是birthday，第二个是you。

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