used to do是过去常常某事的意思。 固定的过去式。 例句: I couldnt do the level of stuff I used to do. 我不能做我以前常做的那个水平的东西。 The compare algorithm is used to do the comparison. 比较算法是用来比较属性值的。
扩展资料
Learn the accent on purpose (actors used to do that).
有意去学(演员都是这样做的`)。
That's as mamma used to do, whole afternoons together.
妈妈总是那样的,整个整个下午都那样。
But I am not abad guy and I am not used to do things like that.