If people were to precede the comprehensive notion of environmental problem, species would not face the situation of becoming extinct any more.请问前半句如何理解翻译?前半句理解为"要是人们在这个概念之前"?之前做什么呢?感觉这句话不完整,是省...
...2014年8月第4次印刷)169页12.2- 假设意义的其他表示法12.2 A 用动词过去时形式表示假设意义2)用于其他结构:It's time we ordered dinner. (现在该叫菜了)It's high time you bought a new car. (你该买辆新车了)He acts as if/as though he knew ever...
题目:He _____ at the meeting this morning. He
was in hospital at the time.A. couldn't have
spokenB. mustn't have spokenC. shouldn't have spokenD. needn't have spoken我选择了mustn't have spoken,而正确答案是A。并且给出的解析是:1.没有mustn't have done 这个结构。2....
...portant to learn foreign languages.为什么不能说learning?It's foolish behaving like that.为什么不能说to behave?It's fun to do/doing - 为什么 doing和to do又都可以?It's of no use crying/to cry - 为什么二者均可?在It isadj/n +...这种结构中,为什么在...