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问题 was to have done是什么时态

One of Marie Curie's outstanding achievements was to have understood the need to accumulate intense radioactive sources, not only to treat illness but also to maintain an abundant supply for research. 居里夫人的一项杰出成就是理解了积累强放射源的必要性，这不仅是为了治...

问题 介词like后面可以接不定式吗

动词 like 后面可以接不定式和动名词。如：I like to play the piano.I like playing the piano.但介词 like 后面是要接动名词的吧。如：It looks like raining. 但是下面这个句子，好像就不是了，从句子意思上看，这个 like 应该不是动词，但它后...

问题 responsible to和responsible for的区别

Our duty is to hold ourselves responsible to the people.  我们的责任，是向人民负责。请问：这句话中的 to the people 可否改为 for the people？为什么？

问题 for sb to do 做定语

The work for him to do is to clean the house. 让他做的工作是打扫房子It's time for you to go to bed. 到让你睡觉的时间了This is a nice place for them to stay. 这是一个让他们居住的好地方以上翻译是否正确？for sb to do修饰先行词，for是否应该翻译为“...

问题 be done that疑问

It has not been decided who will be sent to carry out the task.这是类似于it is done that，也有it is done who？

问题 比较从句的问题

In this surgery today, you're gonna have to create a plane as thin as paper between two delicate layers of tissue without disrupting the major blood flow to the brain.请教老师，这里的as...as...是什么用法，这里前面是省略了which is吗？如果不是，那么这种用法的as从...

问题 句子结构分析和翻译: there are only specific essential pieces to the wardrobe that are necessary

...tems can last a long time. Parents could also enjoy an easy morning, as it will take less time to choose a set of clothes for the school day.上面是摘自一篇关于校服的文章，阅读到黑体文字部分no matter what the school's policy is,there are only specific essential pieces to the w...

问题 it是省略：The box is too heavy for me to carry (it).

The box is ( ).A. too heavy for me to carryB. too heavy for me to carry it书上说A当然正确，但是说B也是正确的。为什么呢？这是不定式的悬空结构吗？麻烦老师详解一下，谢谢！

问题 There be句型的变体

There is no telling whether he will come not.这是there be句型吗？如果不是的话，那是什么句型？感谢老师的回答。

问题 it's the same with that other of most famous hero

老师您好，关注您很久了，第一次提问，望解惑！

问题 归属性和确认性表语的判断问题

...单易行的方法？冠词能否作为根据？似乎不能。he is not the fool ____ we think him to be.这里从句的表语是哪一种？he is not the fool ____ we thought him to be.这里从句的表语是哪一种？给事物下定义的句子中，表语是哪一种？如A plane is a machine...

问题 关于悬空不定式的问题

...式？比如以下例句：I have a lot of work to do.I have a box to put the books in.I have a chair to sit on.2.还希望老师能详细讲解下《剑桥语法》中的悬空不定式第二种的用法。由于个人水平的原因，我这里实在是有点没看明白，它的意思是在说：...

问题 prefer/would prefer+宾语从句的虚拟语气

...r接宾语从句的虚拟语气有两种形式：I prefer that he (should) not go to USA.I prefer that he didn't go to USA.I would prefer that he didn't go to USA.I would prefer that he (should) not go to USA.这四句应该都是正确的?

问题 how come 句子成分

How come nothing has feathers anymore that does not fly, or isn’t descended from something that did? Darwin's theory can't explain it!句中：nothing has feathers anymore that does not fly, or isn’t descended from something that did?语法角度来说，是一个完整的句子，how come在...

问题 be late for 的for是表原因吗

...中感觉很奇怪..  Let's hurry so as not to be late for the meeting.   让我们快点,不要因为会议而迟到 (这句话的原意难道不是参加会议迟到,而是要参加其它活动,却被会议给拖住了?)