英语句子成分划分Tend to do sth be used to do somebody adopt measures

used to do sth,be used to sth ,be used to do sth 关于tend 短语tend to sth.tend to do tend sb.tend to sb.麻烦意思. 英语句型区分be used to do Sthused to do Sthbe used for doing Sth used to do sth. used to do sth 用be used to do sth.造句 用be used to do sth 造句 用be used to do sth造句 be used to do sth造句 use的用法.used to do sthbe used to do sth be used to doing sth 区别(used to do sth 和be used to sb is said to do sth中的句子成分怎么划分