belong在什么情况下要加S

题目

belong在什么情况下要加S
为什么这些句子有的要加S,有的不用呢?
These things belong to my husband.
This coat belongs to me.
These shoes belong to my wife.
These books belong to my brother and me.
These pens belong to Tom and Jill.
This suitcase belongs to you.

答案

主语是单数,在一般现在时中,谓语动词用第三人称单数,即一般在动词后+ s,
主语是复数,在一般现在时中,谓语动词用复数,动词用原形,不需+ s.
如
1.主语是单数,谓语动词+ s,即belong->belongs
This “coat” belongs to me.This “coat” ：这件大衣,单数,
This “suitcase” belongs to you.This “suitcase” ：这个箱子,单数,
2.主语是复数,谓语动词原形,belong:
These things ,These shoes ,These books,These pens 例子中这些主语,都是复数,（简单判断：名词后+s,不止一个）
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