话题 must have been to

话题 to have been flying

话题 forget to have done

话题 have to do with

话题 would have liked to

话题 have sth. to do

话题 are to have done

话题 say sb to have

话题 hoped to have done

话题 have learning to do

问题 情态动词表推测

...也可以表示将来的推测，I will be with you after you break up withthe boy.The moon may not be at that full tomorrow night.You will love the girl when you see her at tomorrow's date.The little girl might feel alone at home after the rest of her family go to Beijing tomorrow.

问题 couldn't have been是什么意思

This expedition couldn't have been more timely because as the country slowly opens up, its Asian neighbours and developed nations alike are scrambling to establish diplomatic relations, many of whom would ultimately like to take advantage of Burma's natural wealth.请问：(1) couldn't h...

问题 require后主动表被动的问题

The garden requires cleaning. 院子需要打扫打扫了。 动名词在此处做宾语，主动表被动。请问老师能不能用不定时的被动形式呢？即 to be done： The garden requires to be cleaned.  因为我看语法书想写不定式也具备名词的用法。...

问题 对廉价航空反对意见的描写（请老师批改）

However, other people believe that the relatively affordable price has brought a lot of negative issues to the environment. They point out that the main impact of two, such as atmospheric pollution and energy consumption are the direct or indirect results of the cheap air travel .They say that cheap...

问题 with a complexion the color of ruby port的用法

...9;d rather England became the 51st state of the U.S.A. than get tied up to there,” said a retired civil servant with a complexion the color of ruby port. “ 我宁愿英格兰成为美国的第51个洲，也不要跟法国连在一起，” 一位退休的公务员如是说，他的脸...