he has she has and it has
we have you have and they have
one person has and many people have
but you must know that i have
ha has she has and it has
we have you have and they have

我认为一般般 只要跟学生说明第三人称单数用has就可了

我觉得读一读还是很有必要的，比单纯的解释要更直接

有点绕口，还是简单明了直接说明第三人称单数用has好了！