which不能引導(dǎo)什么從句

　　You must signal which way you are going to turn.

　　你要朝哪個(gè)方向轉(zhuǎn)，必須發(fā)出信號(hào)。

　　There are two points which I wanted to make.

　　我想要指出的有兩點(diǎn)。

　　We are still friends, though, which is good.

　　不過我們?nèi)匀皇桥笥眩@令人感到欣慰。

　　Which part of Japan do you come from?

　　你是日本哪個(gè)地區(qū)的人？

　　There is some noise in the data which needs to be reduced.

　　資料里有一些需要?jiǎng)h除的不適用信息。