他们在做什么？英文怎么说？

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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/尺启漏it doing?

另外陵烂所有的非人类的动物，物品之类的也都用is。
但是旁州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?

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你好，银皮大很高锋竖兴握丛在这里回答你的问题：
.
.
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What are they doing?

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What are they doing?

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What are they doing

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