The police are after him. 警察正在追捕他。
UK I'm after a tie to go with this shirt. 我要找一条和这件衬衫相配的领带。
I'm sure she's after my husband. 我敢肯定她在打我丈夫的主意。
He's after Jane's job (= wants it for himself). 他想抢简的工作。
Being a movie star has been difficult and isn't really what I was after.
This is a great shop if what you're after is a gift that she will truly treasure.
See also: after preposition (FOLLOWING IN TIME OR PLACE)