could是什么词

could是情态动词。

aux. 能够， 可以可能差点就，本来有可能很想

v. 能（can 的过去式）

I had to pay a 500 deposit to the landlord before I could move into the house.

我得付给房东500英镑押金才能搬进房里去。

He had no money， nor did he know anyone he could borrow from， either.

他没有钱，也不知道能够向谁借钱。

There were about 500 people there， as near as I could judge.

那里有500人，依我看有这麽多。

So hard did he study that he couldeasily pass the examination.他那么努力，因而能够轻易地通过那次考试。