你讲的大概是两个问题：
1.只有第三人称单数做主语的时候,谓语动词要加s,其他人称不加.
He likes music.
We/I/They/You like music.
2.只有在一般现在时态中,才会出现第三人称单数做主语时动词加s.其他时态不加.如
He is playing basketball.(这里用的现在进行时,动词用be + 现在分词）
He got up early this morning.(一般过去时）
3.另外,表示否定或者疑问助动词要用does,而不是do.
Does he like music?
He doesn't like music.
Do you like music?
I don't like music. 你讲的大概是两个问题：
1.只有第三人称单数做主语的时候,谓语动词要加s,其他人称不加.
He likes music.
We/I/They/You like music.
2.只有在一般现在时态中,才会出现第三人称单数做主语时动词加s.其他时态不加.如
He is playing basketball.(这里用的现在进行时,动词用be + 现在分词）
He got up early this morning.(一般过去时）
3.另外,表示否定或者疑问助动词要用does,而不是do.
Does he like music?
He doesn't like music.
Do you like music?
I don't like music.