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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 插入语中的省略

...济学家》里的一句话:Flamboyant, some might even say shameless, “the Macker” is a carpet-bagging native of New York who was governor in 2014-18 and formerly known as a fast-talking Clinton crony and outlandishly good fund-raiser. 插入语是省略了么？some might even say (that he is)...

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 not a few是什么意思（表示“很少”还是“很多”）

Our achievements are the main thing in our work, and yet there are not a few shortcomings and mistakes.请问句子中的 not a few 如何理解？是“很少”还是“很多”？

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 morning前有形容词修饰时的介词

on a cold morning , in the early morning,都是morning前加形容词，但是为什么介词不同呢？有的参考书上写的morning前有形容词修饰时就需要用on，这种说法好像不准确吧？ 请专家老师帮我解答，谢谢。

问题 springs of thought and action是什么意思

This brilliant novel explores the hidden springs of thought and action in one day of a woman's life.这里面的 springs of thought and action 是什么意思呢?

问题 my family可以用代词they来代替吗

My family are against his marrying a foreigner. They say it is not the best choice.请问这个句子对吗？第二句的主语用 they 合适吗? 我的意思是：这个they与前面说的 my family 相吻合吗？

问题 这个现在分词短语saying...的逻辑主语是什么

Vladimir Putin said Russia would start withdrawing the “main part” of its forces in Syria, saying their main objectives (officially, fighting terrorism; actually, keeping Bashar al-Assad in power) had been achieved. 请问：saying 的逻辑主语是？

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”？