有这样一句话：It is important for her to be placed in an appropriate job. 这里 It 是形式宾语，如果去掉，全句变为 For her to be placed in an appropriate job is important. 这样一来，主语就是一个介词短语了，请问介词短语可以作主语吗？...
麻烦老师分析下面的两个题：1. I'm looking for a present for my mother's birthday, ___ she can use and at a reasonable price.A. which B.one 答案为B，选A理解为非限制性定语从句为啥不对？如果在at前面加一个is的话，答案有变...
...问题，求尽量详细。,谢谢！引例：请问这个句子这样对inform进行名词化，然后造句是对的吗？There is a information of enemy's withdrawal from a spy in our troops下面是我在词典和一些考研资料上看到的几种句子：1. There was a
indirect criticism of t...
(1) The most common lexical source for classifiers are nouns; verbs are used less frequently.(2) All classifiers of a given type in a language may have one kind of source (either nouns or verbs); classifier systems of mixed origins — some from nouns, and some from verbs.上面两段话，介绍的...
Several parents spoke of requests for work being ignored or refused by the school.这句话being+done是现在分词作后置定语，但我记得以前学的语法是用过去分词来做这种被动情况下的后置定语，因此我觉得being直接可以删了是不是？后面直接跟ignored....
It is important forthe government to tighten regulation on some behaviour,especially those which have been proven to be damaging to health.句中为什么用to be damaging to health这种形式?damaging是形容词吗？
...eryton was necessary to amuse their morning hours and furnish conversation forthe evening.每逢没有更好的事情可做，就必定往梅里顿跑一趟，这样早晨可以消遣消遣，也为傍晚的闲聊搜刮一点谈资。better offered为过去分词作后置定语，我想问老师这...
He was saved by Dorothy in a great field, and joined Dorothy to go to
the Wizard in search of brains.这句中加粗的地方为什么用介词 in，一般表目的不都是用 for 的吗？麻烦高手给指点一下，不胜感激。
Forthe better part of a century, most biologists have been reluctant
to use those words, mindful of a principle of evolution that says ‘evolution
cannot run backwards’.mindful of...是什么结构？书上说这是独立主格结构，我不太明白......
...seed是名词还是动词？上下文：
China has gained recognition for its pioneer work on true potato seed. The
history of true potato seed (TPS) in China dates back to 1959 when
research was started. Now in china an area of 2500 acres is sown to seed.
...my! My car broke down, and I have to meet my aunt at the railway station before noon. M: You’re lucky. I can drop you off on my way. 2. What will the man do forthe woman? A. Repair her car. B. Give her a ride. C. Pick up her aunt.
...f children learning to read
at home or at school, with the book as a focus for relations between the
generations. Adults are portrayed (描绘) alone
in many settings and poses —absorbed in a volume, deep in thought or lost in a
moment of leisure. These scenes may have been painted hundreds of yea...
Treatments for animals developed using animal testing include pacemakers for heart disease and hip dysplasia. animals后面为什么既有过去分词又有现在分词？过去分词和现在分词可以同时出现修饰一个单词吗?还有别的例子吗