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问题 while protecting the environment中省略了主语和be动词吗

The challenge we face is to find ways to meet the needs of our growing population while _______(protect) the environment.这里填protecting是省略了主语和be动词吗？但是主语不是the challenge吗?

问题 for twice as long as的用法

... districts that stayed closed longest forced all or some of their children to learn remotely for twice as long as schools in Ireland.这里for是什么成分？去掉可以嘛？Indians are the world's biggest book worms, reading on average 10.7 hours a week, twice as long as Americans, according to...

问题 一道时态题(涉及现在完成时和一般过去时)

I was going to visit my friend in Tianjin, but I ________ TO GO ABROAD FOR OUR SUMMER HOLIDAY WITH MY PARENTS NOW.A. have decided       B. had decided       C. would decide       D. decided 答案为A，为什么用完成时，不用D 呢？谢谢!!

问题 不定式做定语什么时候用主动形式和被动形式

...as I had a train ______．A. catchingB. caughtC. to catchD. to be caught答案为c， d 为什么不行，不定式做定语什么时候用主动形式和被动形式，有何区别？谢谢。

问题 railroad sandwiches是什么意思(出自欧亨利的《女巫的面包》)

Well, to-day—well, you know, ma'am, that butter isn't—well, Blumberger's plan isn't good for anything now except to cut up into railroad sandwiches. 出自欧亨利的女巫的面包 这里railroad sandwiches是指什么？从Blumberger's plan kl开始这半句怎么...

问题 On the last day前on去不去

On the last day，we climbed to the top of a nearby mountain to have a good view of the whole city。last前为什么on不省略？《牛津英语指南》中P432中“以next ，last ，this，that，one，every，each，some，any，all等词开头的一些表示时间的词常用表达方式前...

问题 虚拟语气句中的动词前可以去掉would直接用原型吗

下面这句话： This would be especially unfortunate for our children for they become so addicted to the Internet that they might never be exposed to social interaction. 此句是虚拟语气，句中的become为何用动词原型，是become前省略了一个would吗？求解，谢谢～

问题 非谓语动词十种形式分别适用那种情况（其区别又是什么）

...不会选择。比如当表示主动且完成的时候，什么情况下用to have done什么情况用having done.被动完成有三种形式to have been done，having been done,done都是适用什么情况，我有点混淆了。是不是我钻牛角了？不吝指教谢谢了！

问题 less of + 名词+ than...使用困惑

The beacon data lives on the person's phone,making it less of a target to hackers than if government health authorities stored the data.信标数据就在人的手机上，与政府卫生当局存储这些数据相比，这并不是黑客的攻击目标。上面，出现了less of a target...tha...

问题 是so…that…还是单独的that引导结果状语从句

He had a primly pointed jaw, a primly straight nose, and a prim manner of speaking that was so correct, so gentlemanly, that he seemed a comic antique. 请教老师此句的分析。句中that was so correct, so gentlemanly 是定语从句，它的先行项是a prim manner of speaking，说明...

文章 高中英语新课标词汇-教学参考资料-anxious

...表示渴望或想要做某事，其后接不定式。如：We are anxious to know the result. 我们渴望知道结果。I’m anxious to see what the new neighbours are like. 我非常急切想看看邻居是什么样的人。有时不定式前带有由介词for引出的逻辑主语。如：She’...

问题 不定式的逻辑主语与动词不定式作独立成分

1.Our monitor is the fist to arrive.第一个问题：书上说被修饰名词是不定式的逻辑主语，请问什么是逻辑主语，这里为什么会出现逻辑主语？2.We can't go.To begin with, it's too cold.第二个问题：书上说是动词不定式作独立成分，请问什...

问题 look kind of是固定搭配吗

Our ancestors looked kind of like monkeys.1. 老师，kind在句中是名词吗，of like monkeys 是kind的后置定语吗？2. be+形容词+介词(be afraid of, be ashamed of)与动词+名词+介词(get rid of, make fun of, pay attention to..)的区别？前者在句子中的成分知道，但后...

问题 关于may作推测请时的反义疑问句

韦氏高阶》(p1294)中may 表可能，有如下例子： — used to indicate that something is possible or probable  It may possibly be true, mightn't it? [=(less formally) it could possibly be true, couldn't it?]  May it not [=mightn't it, (less formally) couldn't it] afte...

问题 more...than...比较分句中的句子成分分析

Tried out, Falstaff might have rendered more romance to the ton than would have Romeo's rickety ribs to the ounce.书上是这么翻译的：试验一下，要说风流韵事，福斯塔夫的本事原本应该比瘦条条的罗密欧要大得多了。这是欧亨利的《带天窗的房间》...