we've looked everywhere for her,but we can't find her.请问这其中的“have looked everywhere for her"是什么结构,用在哪?

we've looked everywhere for her,but we can't find her.请问这其中的“have looked everywhere for her是什么结构,用在哪? We’ve这里ve是什么意思? We've missed we've got the We've Got The we've中的 've是什么的缩写? we've 是什么缩写?we've 是什么缩写? 'Cause we've just begun. we've been hiding enough We've got our schoolbags. The time we've lost we've got ours already All We've Ever Known we've got to revive We’ve的完整形式! we've unboxed the box. we've的全称是什么 we’ve 是we have 缩写吗