used to do

• 过去常常做某事

used to do的用法和样例：

例句

1. He used to do a lot of drinking but has signed off now.
   他过去常常喝酒，但现在戒掉了。
2. He used to do such work as he could pick up.
   他惯常能够找到什么活就干什么活。