If we give up the idea that higher levels are literally constructed out of lower level elements, as I think we must, then it becomes much more natural to consider even such abstract systems of representation as transformational structure (where each utterance is represented by the seq...
Engrgy is the material foundation for the progress of …. Books fill leisure time for many people.这两个为什么一个加了the 一个不加？It accounts for 60% of the world economy and 50% ofinternational trade. 经济和贸易总量分别占全球总额...
A relative pressure of 0.99 corresponds to a pore size (diameter) of 193.5 nm and hence the total pore volume indicated is the pore volume of pores smaller than 193.5 nm diameter.这个句子中indicated做的什么成分啊，感觉不是独立主格结构，因为没有逗号，也不是过去分...
Mike is often helped by her when he is in trouble.
Mike is often helped by her when in trouble.
当主句主语和时间状语从句的主语一致时，并且时间状语从句是系表结构的时候，可以省略从句主谓部分。
我的问题是被省略之后“when+介...
Writing in the state-run Granma newspaper, the 89-year-old revolutionary leader rebuffed the American president’s suggestion that the 54-year-old trade embargo be lifted, putting the cold war in the Americas to rest.请问：如何理解句中 writing 和putting 这两个现在分词？
But caloric restriction... it kinda shocks the system, and one result is...well, those monkeys on the calorie-restricted diet had lots more naive T cells left than you'd expect in monkeys that old.但是卡路里限制，它有点惊吓住了整个系统，一个结果就是，那些使用了卡...
...？So做句子的什么成分？原文：Some less technical toys are made in China. Some educational toys are also created in China. So are remote-controlled cars which are kids' favorite.翻译：一些技术含量较少的玩具是中国制造的。一些教育玩具也是中国制造的。...
(1)The full import may take a while to sink in.(2)The father was so busy that he couldn't’t find any time to take his son to the zoo.请问老师，1、第一句to sink in被理解，做什么成分？2、请问句2中to take his son与time是动状关系，我看不定式与名词搭配的三种...
...Tom and Jerry. Then I came to Snoopy. I
couldn't alwaysunderstand all the lines, _________ I used the subtitles to help me. In
this way I learnt many everyday expressions that I couldn't find in my
textbooks.向各位老师请教一下这段话横线部分填什么词？答案是but，但我觉得so...
...rly lie to their children as a way ofinfluencing their behavior and emotions, finds new research from the University of Toronto and the University of California. ...
...The former has been put down to social effects, such as a strong
tradition of valuing education.2.The latter was seen as a consequence of genetic isolation.疑问：1.个人理解1句还原主动sb(S)has put(V)the former(O)down to social
effects(C)。原句被动 to social effects 请问是变成了...
1.Above all they'll need great skills in leadership, so that their
organisation can initiate and respond to change in a fast-moving world.
initiate change，respond to change，英语里可以：VN及物 and VI不及物+介词+（作用于同一个）名词？
2.And one more question in this secti...
In the early 1860's many more Chinese arrived in California. 在19世纪60年代初，更多的中国人来到加利福尼亚。
我觉得这个句子中的 many 应该是 much，因为 many 的比较级是 more，副词 much 又可以修饰比较级 more。我的理解不知道对不对？...
请问老师，今天在书上看到这句话:Finishing the work in an hour is easy for us to do. 但感觉有点怪怪的，后面的to do和前面的finishing好像构不成动宾结构，所以这句话是不是错了呢？ 还有如果我改成Finishing the work in an hour is easy for us. 是不...
several hundred中的hundred用单数还是复数？其后可接介词of吗？比如下面几个哪些对，哪些不对？有规律吗？Several hundred workers were waiting outside the factory.Several hundreds workers were waiting outside the factory.Several hundred of workers were waiting outside...