1CHOOSEused to ask or talk about one or more members of a group of people or things, when you are uncertain about it or about them 哪一個;哪些
Which book are you looking for?
你在找哪本書?
Which are the most important crops?
哪些農作物是最重要的?
Miranda was sure it was one of them, but was not sure which.
米蘭達確定此人是他們其中的一個,但不能肯定是哪一個。
which of
I don’t know which of us was the more scared.
我不知道我們中誰更恐慌。
2DETAILused after a noun to show what thing or things you mean…的那個,…的那些〔用於指明事物〕
Did you see the letter which came today?
你看到今天來的那封信了嗎?
Now they were driving by the houses which Andy had described.
他們正開車經過安迪描述過的那些房子。
3INFORMATIONused, after a comma in writing, to add more information about the thing, situation, or event you have just mentioned 〔在書面語中用於逗號之後,補充說明前面剛提及的事物、情況或事件〕
The house, which was completed in 1856, was famous for its huge marble staircase.
這房子建於1856年,以巨大的大理石樓梯聞名。
One of the boys kept laughing, which annoyed Jane intensely.
其中一個男孩不停地笑,這大大地惹惱了簡。
He was educated at the local grammar school, after which he went on to Cambridge.
他在當地的語法學校接受教育,接着又上了劍橋大學。
She may have missed the train, in which case (=if this has happened) she won’t arrive for another hour.
她可能沒趕上火車,若是如此,她還要過一個小時才能到。
4don’t know/can’t tell etc which is whichLIKE/SIMILARif you do not know which is which, you cannot see the difference between two very similar people or things 不知道/分不清哪個是哪個
The twins are so alike I can never tell which is which.
na Britishmagazine that testsproducts made by different companies and provides reports on them to help people decide which one to buy. Which? is known for providing useful information that can be trusted. There is a similar magazine in the US called Consumer Reports.