3、Which bus we should take is still a question.(主語從句）

　　4、Those which are on the desk are English books. （定語從句）

　　5、This is the factory in which we once worked. （定語從句）

　　1、which基本解釋：

　　pron.哪個, 哪幾個, ...的, ...那個

　　adj.哪個

　　2、音標(biāo)：英 [wt] 美 [(h)wt]

　　3、造句舉例：

　　Which is the largest? 哪一個最大?

　　Which of you will go with me?你們哪一個跟我一起去?

　　That is the parcel which came this morning.那就是早上送來的包裹。

　　I said nothing, which made him still more angry.我一聲不響, 這就使他更加生氣。

　　Choose which you like best.選你最喜歡的吧習(xí)慣用語。

　　which is which?哪一個是哪一個。