who sb. is是什麼句式

Who is + 名詞/代詞/物主代詞...?

表示:“誰是某某某”。它是特殊疑問句。

特殊疑問句是指以特殊疑問詞開頭，對句子中某一成分提問的問句。

Who is he?

He is my father/brother/uncle...

Who's =who is (問人是誰) ---Who is the boy? ---he's my brother.

Whose(問物品是誰的) ---Whose is the shirt? ---it's my brother's.

who是定語從句，修飾sb，表示“……樣的人”

比如:

He who doesn't reach the Great Wall is not a true man.

不到長城非好漢。（不到長城的人）

The man who tried to have her killed is still at large.

那個企圖僱凶殺她的男子仍然在逃。

相關例句:

1）那個郵差是誰

-> Who is that postman

-> Who is that postman?

2）那個郵差是我父親。

-> That postman is my father.

3）那個司機是誰

-> Who is that driver?

4）那個司機是我叔叔。

-> That driver is my uncle.

5）那個學生是誰

-> Who is that student?

6）那個學生是約翰。

-> That student is John.

7）這個女孩是誰

-> Who is this girl

WHO一般用於疑問句中詢問某人是誰。如WHO are you ?也可用來引導賓語從句，如：Tell me who you are.（此時WHO引導的句子要用陳述句語序）