Which book have you read?哪一本书你读过了？

Here are the designs. Which ones do you prefer?这就是那些图样。你喜欢哪一些?

It's hard to say which is better.很难说哪一个好些。

Which are the best headache tablets?哪些药片治头痛最好？

Want to know which shops Bi Ren went to?想知道碧仁在拍节目时去了哪些商店？

Which of you wish to go with me?
你们中间哪些人想和我一起去?

Which is heavier, iron or copper?
铁和铜哪一种更重?

Take the sickle which is lying on the grindstone.
把磨刀石上的那把镰刀拿去。

That is the house which I built.
那是我建的房子。

He said he had lost his bicycle,which〔and that〕 was untrue.
他说他的自行车丢了,那不是真的。

Ask him which he wants.
问他一下他要哪一个。

Mary and Susan are twins and I can't tell which is which.
玛丽和苏珊是孪生姐妹,我分不出来谁是谁。

I can't decide which to choose.
我无法决定要选哪一个。

which用作疑问代词时,在特殊疑问句中用作宾语或主语。

which用作关系代词,可引导限制性定语从句或非限制性定语从句,引导非限制性定语从句时which可以用整个主句作为其前行词,相当于and that,有时还可引导不定式短语从句。

Which book have you read?哪一本书你读过了？

Here are the designs. Which ones do you prefer?这就是那些图样。你喜欢哪一些?

It's hard to say which is better.很难说哪一个好些。

Which are the best headache tablets?哪些药片治头痛最好？

Want to know which shops Bi Ren went to?想知道碧仁在拍节目时去了哪些商店？

Which of you wish to go with me?
你们中间哪些人想和我一起去?

Which is heavier, iron or copper?
铁和铜哪一种更重?

Take the sickle which is lying on the grindstone.
把磨刀石上的那把镰刀拿去。

That is the house which I built.
那是我建的房子。

He said he had lost his bicycle,which〔and that〕 was untrue.
他说他的自行车丢了,那不是真的。

Ask him which he wants.
问他一下他要哪一个。

Mary and Susan are twins and I can't tell which is which.
玛丽和苏珊是孪生姐妹,我分不出来谁是谁。

I can't decide which to choose.
我无法决定要选哪一个。

• who谁
• that那