"Τι κάνει;"

[Lng52-._]

Could you also say: "What is he making"?

[jaye16]

Yes, without context that would be correct with the meaning of: "constructing, preparing etc." "Do" and "make" are often confused.

[dieter667754]

I hear this often as a "greeting phrase" but then as "τι κάνεις" in the meaning of "how are you doing"

[jaye16]

Yes, I should have added above that it also means "How is (he/she/it?" or How are you? etc.

[NezihD]

"how is he doing" not accepted.