He don't know what time he have been out of work.理解：He don't know he have been out of work in that time？He don't know when he have been out of work.when百分百等于what time吗？还是是时间状语吗，修饰谓语动词？
When music videos and satellite television offer daunting competition for poems, which demand a good deal of attention.这里的demand为什么不是demands， 照理说which指代前面的句子，后面应该谓语单数。这里which是指poems吗? 但是有逗号的话不是指前面的整个句...
...心旷神怡。It is quite lucky for us to witness the pleasant
progress, where the flowable sand fell to command in the hands of the skilled artists
to form various shapes , of such a massive sand sculpture based on a rather flat
dune. 这里可以用progress吗？我觉得虽然更应该用proces...
...or 1.2 billion people.老师我想问一下这里的which非限制性定语从句都能修饰什么？能修饰某个动词吗？能修饰前面其中的一部分比如to feed 22 percent of the world ’s population吗，因为我觉得has used only 7 percent of the world ’s cultivated land...
"They're global, they're everywhere, and they didn't get to be completely global if they weren't very skilled at being masters of adaptation," he says.
老师好，这段抄自一篇有关老鼠的的文章。我觉得从这段话从 and 之后就是虚拟语气，可...
In the face of the frequent and often vivid media coverage, it is likely that children will have formed ideas about rainforests - what and where they are, why they are important, what endangers them - independent of any formal tuition.