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问题 主句为祈使句if从句为什么用过去式

Please let me know in advance if you could come.这里if后面为什么是过去式?

问题 My...and...作主语时的主谓一致

My friend and classmate Paul ______ motorcycles in his spare time.A race   B races请问老师，这种and的主谓一致题型，有没有具体的办法判断是否是同一个主语？

问题 关于状语从句的省略

...老师这道题 To the couple's great surprise, the house was   in a mess as if ____(break)into. 如果看成不是虚拟，那应该填it was broken，并省略成broken。那如果我看成是虚拟语气，答案就变成it had been broken，这个时候也可以省略成broken吗？...

问题 想问老师句中often being 什么意思

At a swimming pool in Los Angeles, children who are taught to hold their breath under water before they can walk often begin learning to swim when two months old.

问题 状语从句的省略问题

...语一致时，从句可以省略主语，从句的谓语动词采用其V-ing结构。例如：  Although working very hard, he failed in the final exam. (Although he worked very hard,…) 我能理解的是从句和主句主语相同，且从句有be动词时，从句主语和be动词可以省略...

问题 at sea 为什么要用介词at

 When my time comes, I wanna be buried at sea.at sea 为什么要用介词at，而不用in?谢谢老师解答! 

问题 burst into laughter

单句改错题： 6. Hearing the old man's amusing experiences in Africa, we all couldn't help bursting into laughing.答案：把into改成out  或者把 laughing 改成laughter .问：burst into laughter  和   burst out  laughing .意思上可以互换，那 laughing 和 laughter 为什么...

问题 分词短语做状语还是定语

请教老师，I think You’ll frighten the children wearing that mask. 我想你戴那个面具会吓着孩子们的。这个句子中决定最后翻译结果的是不是因为mask用了单数，如果是 用masks，是否就该翻译成：我想你会吓到戴面具的孩子们.I don't get much ...

问题 set good examples to / for

They must be athletes who are masters in their sports and also set good examples for others.句子来自2019版人教版高中英语新教材必修一的 Unit 3（p38）。请问句中的 for 可改为 to 吗？若可以，有区别吗？

问题 主从句为什么会都有连词

中考句子：Have you ever waited in the lunch line only to find when you get to the front that you don’t like what they’re serving?请问老师，这个句子为什么有两连词when和that？

问题 关于agree是否及物的问题

...等大师）查到这样一个例句：We are all agreed that the proposal is a good one. 我们都认为这个建议很好。这个句子肯定没有问题，但问题是这个句子被放在 vi. 的用法后面。我想，这明显是一个被动语态的句子，agree怎么会是不及物动词...

问题 句中的making是现在分词作状语还是与breaking并列？

...otaku’s Klepek, are also reporting that the automatic Windows 10 upgrade is breaking their computers, making certain hardware and accessories unrecognizable by the system until they reinstall Windows. 【Kotaku’s Klepek是一个人名】请问：句中的making是现在分词作状语还是与br...

问题 be past doing sth中的动名词要用主动表被动吗

The foolish child is past teaching. 请问这里的 teaching 是属于主动表被动吗？总是要这样吗？

问题 比较级能修饰代词吗（涉及be more of a...than...）

He is more of a sportsman than his brother.more 在上句中应该是代词吧，为什么比较结构会修饰一个类似名词或代词的词？谢谢老师的精彩解答。

问题 The clock's ten minutes slow的句子成分

The clock's ten minutes slow.这句话中 ten minutes 是什么成分?可否理解为修饰形容词 slow 的状语?He is ten years old 这句话中ten years 是什么成分?可否理解为修饰形容词 old 的状语?