动词加ing,什么时候要在前面加is,am are?

2025-02-22 10:43:51
推荐回答(2个)
回答1:

后者是正确的说法,只有做非谓语的时候不用加am,is,are

回答2:

现在进行时态
You are sitting.
I am standing.
She is speaking.