...这种怎么表示?
然后还有就是完成时的独立结构,比如They having been working for three hours.和the homework having been done 对吗?将来时又如何表示独立结构呢?
最后一个就是,完成时的在否定副词半倒装的时候该怎么倒装呢?never have t...
The effect was especially pronounced for lower performing students, for whom exposure to struggling stories led to significantly better science-class performance than low-performing students who read achievement stories.这个句中的for whom是引导定语从句吗?我理解whom是exposure的定...
...ugh nothing had happened. 他若无其事地继续讲下去。She spat out the food as though it was poison. 她把吃的东西从嘴里吐出来,好像那是毒药似的。有人认为这里的 as though 是引导方式状语从句,但我没有看明白。请专家解释一下!
In addition to all this there was evolved thetheory that light is an electromagnetic disturbance.句中all this 如何理解? 为什么不是all these ? 既然用了all, 为什么后接this, 而不是these呢?
...种主句,比如,Please tell your friend early that you_______(go)to the party. If you'll arrive late for any reason,try to let your friend hnow early.这里主句是祈使句;还有怎么样的主句类型?含情态动词也算一种吗?什么样类型的主句,从句可以是任何...