sb is hearing sth 和 sb hear sth 有什么区别

sb is hearing sth 和 sb hear sth 有什么区别 sb face sth和sb is faced with sth用法的区别是什么啊? sb.和 sth. sb.和 sth. it is time to和see sb do sth造句 sb.is up to sth. sb.is up to sth. she is sth.with sb. it is easy for sb to do sth我想问一下,it is easy enough for sb to do sth和sb is adj enough to do sth和sth is easy enough for sb to do的区别 It is+adj.+to+sb.+to do sth. 和 “It is + adj.+for +sb.+to do sth.”的区别 it is difficult for sb to 和 make sb hard to do sth 有什么区别? sb is doing sth和sb doing的区别?..搞不清了 sb find it +adj to do sth 和sb find it is +adj to do sth 有什么不同之处 sb.be worry about sb./sth.和 sb.be sth.worry.sb/sth请造句子, send sb sth和send sth to promise sb sth 和 promise sb to 英语语法中的 sth 和 sb sb和sth表示什么?