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问题 once a month等中的不定冠词可以换成each, every, per 吗

The dustmen collect the rubbish twice a week. 垃圾工每周运走两次垃圾。The committee meets three times a month. 委员会每月开三次会。We update the schedule at least once a month. 我们至少每月更新一次日程表。请问：once a month, three times a year 这类用法中...

问题 两个关于并列句的问题

... Impurities are substances that are present in small quantities in another substance and make it dirty or of an unacceptable quality.and make it dirty or of an unacceptable quality.是第二个省略关系代词的定语从句还是与 Impurities are substances that are present in small qu...

问题 介词of用法困惑

In Beijing winter is always so dry. The same is often true of Spring.这里为什么用介词of？ 用了介词of, 则句子成分如何划分分析呢？

问题 boiling water还是boiled water

Mix the powder with boiling water.为什么用boiling water，不用boiled water？

问题 respecification 是什么意思

However, with quantifiers that select singular heads, respecification is the only option.上面这句话摘自曹老师经常引用的“剑桥语法”第354页。这句不是很懂，尤其是其中的 respecification 在词典上没有查到。麻烦老师指点一下，并翻译下这个句子...

问题 被数量限定词限定的名词的感叹句为什么只能用how

感叹句注意事项：1、表数量的many， much， little， few，遇此情况要用how：How many books he has！ 他的书真多！How much money he gave her！ 他给了她好多钱呀！这是我在某网站看到的一句话，为什么含有表数量的这四个限定词限定的名词...

问题 考研英语句子结构比较与分析(as seen..., as is show...)

Fortunately, the production of tobacco in the world dropped from 14.364 billion pounds in 1994 to 14.2 billion pounds in 1995, as seen in the first picture, which suggests the downward tendency of tobacco consumption in the next years.值得庆幸的是，就第一幅图来看，世界烟草产量...

问题 冠词的试题

---Have you ever seen ___ TV series named All is Well?---Yes. Yao Chen,____ Chinese actress, acted unexpectedly well.A a, the     B the,the    C a,a    D the,a我认为这里的BD都可以填，甚至B答案更合适。请专家老师解析点评。

问题 特殊的so/such...that...结果状语从句的理解？

1）The book is so written that it gives a quite wrong idea of the facts.2）His diligence was such that he made great progress.     (=Such was his diligence that he made great progress.)以上2句：1)句中so后直接是written,不像通常都带有形容词或副词，2)句such后...

问题 经济学人长难句语法解释

India and Pakistan are so often at odds that there is a tendency to shrug off their spats, but not since their most recent, full-blown war in 1971 has the risk of escalation been so high.本句中斜体部分句子怎么理解，but not……？

问题 offerings为什么要加-s

The first offerings of a penny paper tended to be highly sensational; human interest stories overshadowed important news, and crime and sex stories were written in full detail.此句中offering是动名词做什么成分呢？为什么要加 s ？谢谢老师！

问题 it指代和to do省略

—What's wrong with him? He seemed upset.—He had to give up his drawing, not because he wanted _______ that way but because he had to be.A. this  B. one   C. it   D. such答案C. 请问这里 it 能否用 this 替换？this 指代上一句话不可以吗？还有后面的句子...

问题 请问这句话which后的has，had是是什么句子中的成分呢

Although literacy appeared independently in several parts of the prehistoric world, the earliest evidence of writing is the cuneiform Sumerian script on the clay tablets of ancient Mesopotamia, which, archaeological detective work has revealed, had its origins in the accounting practices of commerci...

问题 状语从句是否只能使用陈述语序

老师好，①Over 75 percent of the energy produced in France derives from nuclear power, whereas nuclear power accounts for just over 33 percent of the energy produced in Germany.②Over 75 percent of the energy produced in France derives from nuclear power, whereas just over 33 percent of the en...

问题 a day’s hire与the day’s hire的区别

The day’s hire for the car is $100. 汽车的日租金是100美元。 句子中的the days’ hire 翻译为“日租金”，但为什么不用 a day’s hire 呢？