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问题 就Cats are a good topic.来探讨复数主语单数表语/宾语的情况

各位专家们好，Cats are a good topic.里的表语用复数很好理解，我看到这句并没有疑问。猫只能是“一个”话题。   但是薄冰的 大学英语语法 里的一句 Tigers are a dangerous animal.确实突破我的认知。这句对吗？这个a要怎么理解...

问题 请把这句话的结构分析一下

That's why on the CDs we're going to talk just like the native speakers that we are, in a normal conversational tone. 

问题 must开头疑问句的回答问题

—Must this be kept secret? — _______Tell it to no one! A. Yes, I must. B. Absolutely! 答案为 B。A 为何不行? 谢谢!!

问题 while与when的一道辨析题

John was listening to the radio ______ his father washed his car.参考答案是 when。我认为也可用 while,请专家老师解惑，十分感谢您一直无私的指导。

问题 不定式修饰动词能作原因状语吗？

He challenged Lincoln to fight a duel. 不定式在这里是作原因状语吗？感觉做原因状语翻译得通。

问题 rather than是介词还是连词

Rather than Robert drive in his present state, I'd prefer to drive him home myself.请问专家老师，划线部分是什么句法成分？rather than 是介词还是连词，后面引导的是句子还是短语？谢谢老师的解答。

问题 一般现在时用法的用法实例分析

请问：这三个句子分别属于一般现在时的哪个用法呢？I am Rose.I come from China.My school is next to my house.

问题 justified可用于形式主语的句型吗

请问专家：justified 可用于形式主语的句型吗？比如：It is justified for him to sell the house.It is justified that he should sell the house.

问题 five thousand作主语谓语动词用单数还是复数

比如：Five thousand _____ sent to the front. (was, were)

问题 如何辨别as是原因状语还是时间状语

He had to walk upstairs as the lift was out of order.当电梯坏了 和 由于电梯坏了 都说得通,遇到这种该如何辨别呢?

问题 关于状语从句的省略(it 指什么)

状语从句when (it is )necessary或if (it is)possible等, 这里的it 指的是什么呢？如：When necessary, we'll have a meeting to discuss it.谢谢！

问题 ​虚拟语气问题以及虚拟语气主句时态问题

虚拟语气问题以及虚拟语气主句时态问题It would have been better to let one director have this way.这是不是一句虚拟语气的句子？如何理解混合时态虚拟语气，尤其是主句时态？

问题 without的用法

...法是什么Because I've personally not experienced additional benefit to quitting coffee, in any short term experiment, I'm biased toward leaving it in if that's your preference. However, I do think it is worth a trial without either now or later.

问题 句子成分分析

Londen is a place which it is easy to get lost in.这句话可以去掉it吗？我的理解是：如果有it，则it为形式主语，不定式为真正的主语，关系代词which是in的宾语。如果没有it，关系代词作定语从句的主语，同时也作了in的宾语，此时不定式...

问题 off+what引导宾语从句

下面这个句子中off+what引导宾语从句，其中这个off是"属于"的意思吗？Whalton was about to witness the tragic ending of a desperate chase in the waters off what was then the US Territory of Florida.