這件事情是發(fā)生是過(guò)去的,屬于過(guò)去式是為什么要用助動(dòng)詞do，而不用are這里的afraid 做動(dòng)詞用，所以用didafraid是形容詞啊我弄錯(cuò)了1． used to do sth. 過(guò)去常常做某事。（現(xiàn)在不做了）例如：My father used to be a teacher.He used to have long hair.其否定形式常用didn’t use to 或 used not to。例如：She didn’t use to / used not to wear a skirt.2． be used to sth / doing sth.習(xí)慣于某事或者習(xí)慣做某事，其中to為介詞，其后跟名詞，代詞或形容詞。例如：I am used to getting up early.I wasn’t used to city life, but now I have got used to living in this city.