The meeting was supposed to take place on Tuesday,but we've had to postpone it.but we've had to postpone it.have had to 这与have to 有什么区别？have had to 是have to 是过去完成时形式么？

he was late for the meeting 句子成分? meeting,was,off,put,the组合一句话 he was present the meeting yesterday aftermoonhe was present ________ the meeting yesterday afernoon. By the time we arrived the meeting was over.翻译 the meeting ended 2 hours和the meeting was over for 2 hours翻译 when everyone was seated the meeting began.还有seated the meeting Mr.White was absent from the meeting yesterday. He was too happy to say____(something) at the meeting The meeting was said to be a c___ success. the meeting was said to be a c___ success. I firmly believe___he said at the meeting was right. The sports meeting was over on Friday?顺便问一下, The meeting lasted about an hour. 这句话对吗?需要在meeting后加 was吗 the meeting being over,all of us went home. 和when the meeting was over ,~ 为什么用being和was Dad was the reason he was at the meeting that day.翻译 The number of students absent from the meeting was surprising.这里为什么要用was He is late for the meeting .he is late for the meeting.he was the l____ to get to the meeting . 1,He was to cross the road when a car suddenly raced to him.（在was 后面加about,.我们知道was+动词不定式也可以表示将来为什么这里要用was about to 表将来呢?）2,She said she was going to come when her mother told her supp