1.uesd to doing sth-------------习惯于做...
2.used to do sth----------------过去常做...
3.be uesd to do sth-------------被用来做...
另外,请回答这一道问题：
4.________lot of trees on this hill.
B.There used to be
关于uesd to 的相关用法?
1.uesd to doing sth-------------习惯于做...
2.used to do sth----------------过去常做...
3.be uesd to do sth-------------被用来做...
另外,请回答这一道问题：
4.________lot of trees on this hill.
B.There used to be