He___in London
for more than ten years, but he has never regretted his final decision to move
back to China.
A.was living B.lived
这个答案是B，答案上的解释是in London发生在过去，所以选B,但是A也是发生在过去啊，为什么不选A啊？
When the Revolutionary War was over, General Washington wanted to go home to his Virginia estate, called Mount Vernon.上文中过去分词called只表示被动但我没有看出来过去分词发生的时间在谓语动词之前？请老师讲解一下，非常感谢。（听曹老师讲解过，...
Its major role is in the use of the Monitor,which allows Monitor users to produce more correct output when they are given the right conditions to actually use their Monitor,as in some planned speech and wirting.
It is natural for person like her, with her personal sufferings as an insignificant daughter-in-law in a big feudalistic family这个with引导的是什么成分，我只见过it is for sb to do 的结构，这个没看懂。这是不是个错误的句子。
...？在How to Get the Poor off Our Conscience中，作者对于两个前人的观点采用了不同的时态。过去时 In the 1830s a new formula became available for getting the poor off the public conscience. The essentials are familiar: The poverty of the poor was the fault of the poor. 一...
In the animal kingdom, weakness can bring about aggression in other animal.上面这句出自2011年高考英语广东卷阅读理解A第一句，我有两个疑问：1. 其中的 aggression in 可以换成 aggression from 吗？2. 为什么其中的 animal 用单数不用复数？
...o do in an emergency.
老师好。请问，这句话里explain是怎么用的 ？属于及物动词还是不及物动词？做名词成分的what to do 可以不紧挨着 explain吗？
如果写成 explain what to do to them ，这样的位置搭配我倒是可以理解......
谢谢老师。