they的单数是：it

释义：pron. 它

词汇搭配

1、Dont mention it. 不必客气。

2、not much in it 没什么差别

3、call it a day 收工

常见句型：

1、The baby next door kept me awake. It cried all night.

隔壁的孩子吵得我睡不着觉。他整夜哭个没完

2、There is a rosebush near the fence and it is very beautiful.

篱笆附近有一丛玫瑰，长得非常美丽。

3、They got a baby and it was very lovely.

他们生了个孩子,很可爱。