我想知道他是谁，来自何方，为何而来。

I wonder who he is, where he comes form, and why he comes.

youdao

我想知道他是谁。我想站在他面前，看着他的眼睛，我要知道他就是那个人。

I need to know who he is. I need to stand there. I need to look him in the eye and I need to know that it's him.

youdao

我很想知道他是谁，从哪里来，来干什么。

I wonder who he is, where he came from and why he came.

《新英汉大辞典》