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问题 If left unchecked中为什么不是leave呢？

If left unchecked， they will impede the healthy development of the entire society.如果不加以控制，虚假承诺则会影响整个社会的健康发展。请问上面句子中left为什么是过去式呢？可以是If leave unchecked吗？

问题 differ in 的成分和作用分析

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...

问题 将现在分词放在句首的倒装句分析

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？

问题 形容词vacant在句子中的位置

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...

问题 不定式作方面状语

...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...

问题 请问这句话怎么理解，how是引导状语从句吗

I am an 8 plus at sort of the shock meter of how jeremy Lin played against Kobe Bryant and the Lakers.

问题 When引导的从句的句子改写

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...

问题 短暂性动词跟一段时间连用

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，...

问题 关于终结与非终结

...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...

问题 剑桥英语语法之融合型关系副词

...的总结，我还是不理解融合型关系副词比如where（=介词+the n.+引导词）还是where（=the n.+引导词），如果是后者，就还能引导名词性从句，如果是前者，那么是不是像where或者wherever这种融合型关系副词都不能引导名词性从句，因...

问题 限制性定语从句为什么不用in which

"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?

问题 标题中的标点符号及定冠词的大小写问题

Cappadocia, The Natural Wonder in Turkey看到一篇文章的标题是这样的，请问老师，这个标题书写格式正确吗？感觉好奇怪，这里的逗号使用以及大写The，是正确的吗？

问题 分词与定语从句的疑问

... 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...

问题 there’s not really a lot going on 中的 a lot是代词或者名词吗

...e did some radar imaging from satellites from above. Radar can get through the clouds.So, what have we learned? Yes, Karen?FEMALE STUDENT: Well, I remember reading that there’s not really a lot going on… that the surface of Venus is just flat and smooth in a lot of places…请问老师，...

问题 一个包含5个从句的句子

...英语水平。What surprised me most was that Tom even didn’t know whether there was any difference between the two words that he had learned when I met and asked him the other day.