你好！be used to do…是一个被动语态短语，意为“被用来做…”，例句如下：
Nowadays， mobile phones are more and more used to help us work.现在，移动电话越来越多地用来帮助我们工作。
除此之外，关于“used”还有以下两个固定搭配：
1、used to do…过去常常做某事…
2、be used to doing…习惯于做某事…
例句：My grandparents used to live in the countryside， but now they are used to living a happy life with us in the city centre.
我的祖父母过去居住在乡下，但现在他们习惯于和我们居住在市中心。
beusedtosth例句
be used to do sth.被用来做某事
The wood is used to make desks.
This powerful drug is used to tranquilize patients undergoing surgery.
This kind of material is used to make medical machine.
Newspaper that you have read can be used to stick on the wall.
