Ever since humans have lived on the earth, they have made use of various forms of communication. Generally, this expression of thoughts and feelings has been in the form of oral speech. When there is a language barrier, communication is accomplished through sign language in which motions stand ...
Non-identical twins, who only share about 50 percent of their genes, differ in how strongly they attract mosquitoes, the scientists found.老师，这句话的结构没看懂，differ in how strongly they attract mosquitoes，这句话在里面是什么成分？ 正常语序是：the scientists...
It began, and for many years continued toexist, as a supplement to the apprenticeship system still in vogue during the seventeenth and eighteenth centuries.
请问老师为什么这个句子中still前没有be动词，as引导的时间状语从句难道可以省略be动词吗？谢谢老师o(^o^)o
Covering much of the earth's surface is a blanket of water.上句中, is 是系动词吗？这是倒装句吗？上句可以倒过来说，即 A blanket of water is covering much of the earth's surface 吗？修改后的句中is covering还是系动词吗？
The automobiles move only when they contain at least one occupant, whereas railway carriages spend a considerable amount of time running up and down the tracks vacant,or nearly so.这里的vacant只有形容词的词性，是做状语，还是定语修饰前面的主语carriages？无论是做状语...
...题的解答http://ask.yygrammar.com/app_q-43310.html
我有些小问题:The books were fun to read.
1.为什么不定式在这里不作原因状语，解释The books were fun?
（或者）2.我看了曹老师您的解答，有点不懂的就是为什么to read不可以作fun的后置定语，我...
老师们好，这是原句：The couple's
three children were excited when their parents finally agreed to buy chicks.学生想问的是这句子可否改写成：The couple's
three children were excited,Being agreed finally to buy chicks by their parents
?若可以那when引导从句和这个过...
The work for him to do is to clean the house. 让他做的工作是打扫房子It's time for you to go to bed. 到让你睡觉的时间了This is a nice place for them to stay. 这是一个让他们居住的好地方以上翻译是否正确？for sb to do修饰先行词，for是否应该翻译为“...
2021年黄石中考有这样一道题：Over the past few months, Chinese COVID vaccine(疫苗) _________ in many other countries.A. have arrived B. arrived C. had arrived这个句子的时间状语over the past few months是一段时间，按理说谓语动词应该是延续性动词，...
...I read a book yesterday.(终结延续动词？)B: Her hand knocked against the glass.(终结短暂动词？)A句对于read终结性的判断，应该从主语I由没有读那本书转变为读了那本书，还是应该从宾语a book由没有被读转变为被读了。B句对于knock终结性的判...
"How tall we are now is strongly influenced by the environment we grew up in," he said.这个句子为什么不是 the environment in which we grew up ?请问老师们，这个句子环境后面的限制性定语从句为什么不用in which?
... one of his main domestic problems and by forecasts showing that the retiring baby-boomers(生育高峰期出生的人) will crush the government's finances, George Bush is expected to unveil a reform plan in next week's state-of -the-union address.【答案解释】民意调...