which
🇺🇸
/wɪtʃ/
🇬🇧
/wɪtʃ/
determiner
A1
asks about one thing from a group
Which book do you want to read, which is on the shelf?
你想读哪本书，哪本书在书架上？
A2
shows the exact thing you mean
She found the key which opens the door.
她找到了那把能开门的钥匙。
A2
adds more details about something
The car, which is red, is very fast.
那辆车是红色的，速度非常快。
translation
哪一个, 那个, 它