春天里吃大米
What is he doing? I 是第一人称用am。you 是第二人称用are。 he/ she/ it都是第三人称，全都用is。所以是:What am I doing?What are you doing?What is he/she/it doing? 另外所有的非人类的动物，物品之类的也都用is。但是如果第三人称是非复数，比如他们，她们，或一群动物，就要用are。所以是：What are they doing?What are those boys doing?What are these dogs doing?
chenmingzhu
"What is he doing?"
双语例句
1.你上次见到他时他在做什么？
What was he doing when you last set eyes on him?
2.他很清楚他在做什么。
He was alive to what he was doing.
3.她抬起一只眼皮看看他在做什么。
She lifted one eyelid to see what he was doing.
4.我们也能看到他在做什么。
And you can see what he's done.
5.我希望这个人明白他在做什么。
I hope this guy knows what he's doing.
6.有一阵子没见杰克了，不知道他在做什么。
I haven't seen Jack for a while, wonder what he's been doing.
7.我不知道，不管他在做什么，他一定想让他成为一个秘密。
I don't know, whatever he's doing, he must want it to be secret.
8.因为我想让他知道他在做什么。
Because I want him to know what he's doing.
9.首先，我想他不知道他在做什么。
First of all, I don't think he could have known what he was doing.
10.那人是谁？他在做什么？
Who is that guy? What's he doing?
家装工装
他正在干什么 What is he doing 例句： 1.他正在干什么?他正在看电视. What is he doing He is watching TV. 2.嗯,我不知道?他正在干什么? Eh?I don't know?What's he doing right now? 3.他正在干什么?他正在看电视. What is he doing He is watching TV. 4.你能想像他现在正在干什么吗? Can you imagine what he is doing now? 5.看这个男人.他正在干什么? Look at this man .What is he doing
