1、他是谁的英语是：Who is he?Who的音标：英 [huː]、美 [huː]。

2、这个男子让人感到有些熟悉，但是希尔斯滕一时认不出他是谁。Something about the man was familiar, although Hillsden could not immediately place him。

3、警察知道他是谁后，便向他要了签名，然后只给了他个警告就放他走了。When police realised who he was, they asked for an autograph and let him off with a warning。

4、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。