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问题 定语从句的关系词at which和when

Researchers are looking at how new technology may be delaying the point which college-bound students truly become independent from their parents. 请问这里可以将which改成when吗？答案是在which前面加上at

问题 doesn't mean的主语是哪个？

Tronick believes that just because a child isn’t learning from the screen doesn’t mean there’s no value to it—particularly if it gives parents time to have a shower, do housework or simply have a break from their child. 

问题 announce...as中的 as 可以改成 to 吗

announced the third Sunday as June to Father's Day这里的 as 可以改成 to 吗？意思是用to表示一种所属关系，理解为六月的第三个星期天属于父亲节，这样是可以的嘛？谢谢大佬解答这个疑惑！

问题 介词短语out of my yard做什么成分

I had spent the afternoon picking up branches out of my yard and tossing them away.请问这句话里介词短语out of my yard做什么成分？状语、补语或定语？

问题 空格填a few 为什么不能填few

空格填a few 为什么不能填few，谢谢!He hopes the animals can find good owners who will keep them forever, not just for ______ weeks.

问题 特指名词前的定冠词为什么要去掉

有本语法书上说下面句子中定冠词要去掉：We cannot imagine the life a hundred years from now. 我们没法想象一百年以后的生活。这不是特指吗？为什么要去掉定冠词啊！

问题 两个语法上都正确的选项如何选

原题目：Wilma wasn't chosen to do the job as she was considered ______ experience.A.to lack B.that she lacked.答案是A。CD选项较简单已排除。我的问题是：就我的理解来说，从语法上看B也没有错，为什么B不能选？

问题 but for必须要连用虚拟语气吗

书上说：but for 一定要与虚拟语气连用，但这种说法是不是太绝对。如下面这个句子：The sale was supposed to last for a week, but for all practical purposes it’s over.它就是不虚拟语气啊！

问题 如何理解“with+宾语+不定式”的用法

...或在当时看来尚未发生。如：With such good cadres to carry out the Party’s policy we feel safe. 有这样的好干部执行党的政策，我们感到放心。请问：这句话如何体现“不定式所表示的动作尚未发生”？

问题 求分析“名词+and+句子”（and前面没有动词）

_____ and I’ll get the work finished.A. Have one more hourB. One more hourC. Given one more hour D. If I have one more hour 答案为B。但只有B答案没用动词的形式，请详细解释一下。谢谢。

问题 请问along在这里是什么词性？

Little Pearl，sensitive to her mother’s excitement without knowing the reason for it，was dancing along at Hester‘s side，singing and……翻译：小珍珠敏感地觉察到母亲的兴奋，尽管她并不知道原因。她在母亲身旁边跳边唱，……请问was dancing along at Hest...

问题 有关虚拟语气的选择题(涉及insist后的从句)

They all insisted that the plan _______ practicable.A. was      B. were    C. be     D. should be

问题 美元符号的读法问题(先读还是后读)

The project, estimated to cost $1.72 billion, will add 1.4 miles of beach to Dubai's coastline. 上句中的$（美元符号），写在 1.72 billion 的前面，那在读的时候是应该先读 dollars 再读1.72 billion, 或者还是先读 1.72 billion 后再读 dollars 呢？感谢老...

问题 Once upon a time,once upon 的修饰关系

Once upon a time,there was a king ruling the country.老师，once 是副词，upon 是介词，前者修饰后者吗？

问题 throw是不接动词不定式的，在句子中如何理解？

 someone threw open the church door.老师，throw to open....好像没有throw to do sth.的，请问如何理解？