①He must have left Beijing,（hasn't he?）②A：Those tomatoes are huge!You must have watered them a lot! B：Yes,I （did）.They ought to be ripe enough to pick by next Friday.为什么①用现在完成时，②用一般过去时，②能不能用“Yes,I have.”？
...nts and
children.1.这里为什么要用for？是因为it is adj for sb todo？但是这里的sb.不应该是指人么？怎么是there be句型？2.能否改成It is normal there is generation gap between parents
and children.这样改有错误么？是同时存在两个谓语？还是什么错误...
老师说，ability 只用于人，不用于事物。如：I doubt my ability todo the job. 我不能肯定是否有能力做那份工作。Tiredness can affect your ability to drive. 疲倦会影响你的驾驶能力。但我找到一个例子，它是用于事物的：This year has test...
...a and usually are related to some myths, legends, or historical events. If youdon't know about the origin of certain idioms, you will know their precise implications very hard. As a result, studying Chinese idioms are helpful for people to better know the traditional Chinese culture. Chinese idioms...
In the filthy jail in Sianfu there were over 200 of them, captured doing espionage or propaganda.这个句子的意思很容易理解是，他们中超过两百多人由于间谍罪或散布言论被捕。请问各位老师过去分词captured 和doing之间为什么不加上介词 for而是直接...
... 这句的should这里的should是表推测可能性？(2) "Ha, you see it now. My eyes have been trained to examine faces and not their trimmings. It is the first quality of a criminal investigator that he should see through a disguise." 这里的should是表示“应该”的意...
... little prince described it to me, I have made a drawing of that planet. I do not much like to take the tone of a moralist. But the danger of the baobabs is so little understood, and such considerable risks would be run by anyone who might get lost on an asteroid, that for once I am breaking through...
...tion ，she reached a point in her career ___ she needed to decide what todo. A．that B．what C．which D．where关于这道题向老师请教三个问题1.这道题的point和stage一样既可以用when也可以用where吗？这类名词还有哪些呢？2.situation后用where，occasion后用w...