Nancy are looking___the knife.(after,for,along,like)选词填空.应该选after,但是为什么?

题目

Nancy are looking___the knife.(after,for,along,like)选词填空.应该选after,但是为什么?
要是选了after应该怎样翻译?

答案

for

look for=寻找

look after = 照看