He is my brother.they are my sister 观察句子,为什么he后面用is而they后面用are?

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He is my brother.they are my sister 观察句子,为什么he后面用is而they后面用are?
He is my brother.they are my sister 观察句子,为什么he后面用is而they后面用are?

He is my brother.they are my sister 观察句子,为什么he后面用is而they后面用are?
is 使用在单数后面,are用在复数后.
he是单数,意思是他（一个人）they是复数,（他们/她们/它们）

前者单数，后者是复数

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你正在学英语。
要学好，就把英美两国人写的句子背下来，以后就学着说，就会说英语了。
语言是人创造的，英国人创造的就叫英语。
学语言没有为什么的。不懂的，先背下来，要知道外国人就是这么说的，然后别的再说。
为了让中国人明白英语”为什么“，中国的老师们创造了”语法“，其实，还不就是告诉你，外国人怎么说话的。我可以告诉你，英语语法是，这句话的is 和 are 都是一个动词叫 Be (是）的现在分词形式，不过，is是单数及第三人称单数形式，are是复数及第二人称单数形式。那你就知道，这样学习，这样问”为什么“有多么浪费时间精力。
所以没有为什么的，只有一个原因：外国人就是这么说话的。

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前面单数，后面复数

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