be used to后加什么词

be used to doing sth习惯做某事；

be used to do sth被用来做某事；

used to do sth过去常常做某事。

例句

It can also be used to mean an expression of sympathy.

它也可以用来表达同情的感受。

Oxygen could be used to breathe, and hydrogen could be turned into fuel, rocket fuel.

氧气可以用来呼吸，氢气可以变成燃料，火箭燃料。

She was used to her mother\'s histrionics.

她习惯了母亲装腔作势的`样子。

They\'re used to stretching their budgets.

他们习惯于精打细算。

It\'s very different to what I\'m used to.

这与我所习惯的大不相同。