Several weeks had gone by _____ I realized the painting was missing.A. as B. before C. since D. when这道题为什么选B不选D呢?当我意识到的时候,已经过了好几个礼拜了。但是答案是B before。before我也可以理解,但是我觉得D也是对的。
Joseph Ellisis a historian and prize-winning author who wrote a book called "His Excellency: George Washington."可以把所有的定语从句都改成由介词引导的复合结构吗?那么,什么时候选择定语从句什么时候选择介词引导动名词复合结构,有什么...
1.如果是有Be动词情况下
Is he not a rich man?
Isn't he a rich man?
2.如果没有Be动词的情况下
Did he not come yesterday?
Didn't he not come yesterday?
两组句子在表达意思上有没有差别,Not应不应该提前?
What _____ would happen if the director knew you left that way?A.do you suppose B.are you supportingC.will you suppose D.you would suppose这道题里选什么?用一般现在时还是过去将来时?
A breaking system should be installed to prevent the deck slipping away uncontrolled.这里uncontrolled是作什么成分?我分析了两种情况:一是deck slipping away作动名词的复合结构,uncontrolled省略了from being uncontrolled;二是uncontrolled作状语形容词,但是逻...
题目:We firmly believe that ___ the new examination system comes into existence, completely new situations will arise.A. considering B. supposed C. providing D. given答案是C 为什么supposed不行呢 B和C之间的区别在哪里呢?
...是连词而不是介词?expect when/ expect if:I think most people feel the same way—except when there are social consequences to not having particular items.这里的expect是连词还是介词?when从句是理解为expect的宾语? 还是expect when作复合引导词呢?