used to do sth.意思为“过去常常做某事”，需要强调“现在不做了”吗？

used to do sth.意思为“过去常常做某事”，需要强调“现在不做了”吗？

可以这样理解
如
He used to be a teacher , but now he is a writer .

①【used to do sth.】：过去常常做某事（现在不做了） i used to go fishing everyday. ②【was used to do sth.是be used to do sth.的过去形式，用法一样】：某物被用来做某事 the pen is used to write letters.& the truck was used to transport goods. ③【be used for doing sth.】与上面的【be used to do sth.】都表示某物被用来做某事，只是介词不同 the pen is used for writing letters. ④【be used to doing sth.】表示习惯于做某事 i am used to getting up early in the morning.这个用法与【get used to (doing) sth. 】的用法和意思一样，都表示习惯于做某事 祝学习进步，望采纳