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问题 情态动词的肯定与否定难点

...一对一错，这是为什么？误：He studied hard, so he could pass the exam. 他学习很努力，所以通过了考试。正：He didn’t study hard, so he couldn’t pass the exam. 他学习不努力，所以考试没能及格。

问题 虚拟语气的用法疑问

It has been estimated that if the bridge were packed with cars, it would still only be carrying a third of its total capacity.However, size and strength are not the only important things about this bridge.1. 上面第一句不是描述的是事实吗？不应该用现在时吗？2. 第二句中的 a...

问题 very fun的说法对吗

查词典，看到 fun 可以用作形容词，请问可以说 very fun 吗？比如说：It is very fun to be with the children.（这样的句子算对吗）但我见到过：It is great fun to be with the children.（这说明 fun 是名词嘛）

问题 关于in no doubt的句子结构分析

老师请看以下句子：White was in no doubt the referee made the correct decision. 怀特确信裁判作出了公正的判罚。请帮我分析这个句子的各个成份，谢谢！

问题 between 不和and搭配而和versus搭配吗？

Something highlights the clash between the artificial ,constructed nature of slender ,flawless,"model look" versus two stark realities.

问题 句子分析

These underestimated the actual age by factors of 10 to 50 because much of the sedimentary record is missing in various locations and because there is a long rock sequence that is older than half a billion years that is far less well defined in terms of fossils and less well preserved. 不懂th...

问题 when doing, while doing

___________ arriving at the camp,the coach asked us to ski. I skied carefully,but....题目答案是when, 想问一下，还可以是while吗？when doing等于while doing?这里arrive 是短暂性动词，用了ing形式，表示“即将”吗？

问题 用分词或不定式有什么区别

He tried treating the patient with a new medicine.I regret not having taken the job.尝试，懊悔这类词，后面用分词和用不定式有什么区别？   （治疗病人，得到工作 不应该用不定式更合适吗？）

问题 插入语的用法

"But that stimulates even more of a demand-there is no end in sight," Mr. Schleicher said, "The demand for skill. clearly, is growing faster than the supply that is coming from schools and colleges."老师这句话中的-there is no end in sight是不是插入语？

问题 down用于句首的意思和用法

Down in a corner of the garden behind all the raspberry bushes was a dense thicket where neither flowers nor berries would grow. 这句话中的down是什么意思？

问题 How long既可以表示时间和距离吗?

How long does it take from A to B? 这种可以表示时间。我想知道 How long is the bridge over the Yellow River? 这种常见吗？

问题 不定式进行式作后置定语的问题

如我想表达，下个星期将坐在这个座位考试的考生是ALICE，可以翻译为：The candidate to be sitting on this seat for the exam is Alice.

问题 in 1985 和 for 1985 区分辨析？

Air Canada have just won the prestigious air transport world passenger service award for 1985.The film won an Oscar award for 1985. 以上2句为什么不是in 1985呢？ 用介词for 1985不懂。 麻烦老师解释一下，谢谢！

问题 prevent能直接跟doing sth吗

比如The cylinders shall be secured with triangular wooden chocks to prevent rolling.这句话是不是错误的？应该改成prevent them (from) rolling.或者是把rolling改成名词prevent the roll.

问题 关系代词that前有逗号的缘故

《经济学家》的句子：But the danger is that America continues to drift towards protectionism, industrial policy and, on the left, punitive taxes on capital, that dampen its business vim. 各位大咖专家老师怎么看？谢谢！