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问题 非限制性定语从句可用破折号连接吗

...常是在前后用逗号隔开，但下面这个句子用的是破折号：The tall building over there—which cost 300 million yuan to build—has been empty for a long time. 那边的那栋高楼，就是花费了3亿元的那一栋，已经空置很长时间了。请问老师：非限制性定...

问题 in enough sth 是个词组吗？为什么查不到呢？

He had been in enough briefings over the years. 这种简要介绍他听过多年啦。Have you ordered in enough envelopes this month? 这月你订足信封了吗 ?怎么感觉 in enough sth 像个词组似的，但是查不到？

问题 would+do是对过去习惯的推测还是表示过去习惯做某事

Before his retirement he would catch the early bus every morning.请问老师，上句中的would是对过去习惯的推测吗？一直以为是过去习惯做某事，可是看到有书说这是对过去习惯的推测，不太明白两者有什么不同？谢谢老师的解答。

问题 find to one's suprise that..句式怎么理解

They found to their surprise that the goddness turned out to be a very modern-looking woman.这句子中found to their surprise 结构是什么意思? to their surprise成了found的宾语吗? 这样的话,that从句起什么作用，去修饰surprise??

问题 Please give me a chair to sit on.

请问这个句子里的“on”可以去掉吗，不能的话有什么语法规则在里面，可以用汉语里的“兼语”来理解“chair”在这里的作用吗 此外，They have trouble solving the problem being talked about .这里的“about”也和“on”是一样的用法吗

问题 状语从句+主句的标点符号问题

1.Work together, if possible.2.If you want to attract schoolchildren to science and technology, make the lessons more practical.3.If you are threatened with court action don’t panic.4.These glands all react if challenged by infection or trauma.在上面四个句子中，条件状语从句分别是...

问题 关于where关系副词的范围划分问题

Economy：The process or system by which goods and services are produced, sold, and bought in a country or region韦氏高阶词典问题：这条定义当中的by which能否替换成where作为”抽象性地方名词process/system”的关系副词去自行理解。常用的关系副词why/where/...

问题 when visiting和when to visit

And tourists are encouraged to book tickets on the Internet and stay away from busy hours when________.(visit)答案给的是visiting，when visiting在这道题中相当于when they are visiting吧，那意思不就变成“正在参观”了吗，但题目里给我一种“将来”的感觉，“...

问题 关于特殊疑问句中what后是否接名词的习惯问题

请教各位老师：what nationality are you = what is your nationality；而 what is your name ≠ what name are you? 这种情况有什么规律的吗？什么情况下 what 后面可以加名词？什么情况下不可以加名词？谢谢！

问题 in doing sth是什么句子成分

There is no advantage in going so early. 去那么早一点好处都没有。There may be some advantage in leaving here. 离开这里也许会有好处。There is little advantage in buying so many books if you can’t read. 如果不识字，买这么多书就没有什么用了。请问这里的 i...

问题 短语动词的介词后可以不跟宾语（省略宾语）

...后一定接宾语，我觉得过于绝对了。比如这两个反例，He is easy to deal with.He is easy to get along with. 这两句中短语动词的介词后就可以省略宾语，不接宾语。这俩句子中，介词的逻辑宾语就是主语，所以介词后不需要再加宾语了...

问题 如何正确使用facing

...困惑的是facing，我的直觉告诉我应该理解成a learning agent is facing when xxxxx，但是书中的用法是facing + 短语，让我不敢这么想。老实讲我第一次见这么用的，以前见的都是facing + n，或者is facing that/when。所以我的问题有3个：1.严格来...

问题 too many与so many 的用法区别

How could the boy remember ____ many uncommon Chinese characters?A. very              B. so                C. such                   D. too答案是 B 项（so），选择 D 项 to...

问题 非谓语动词能作非谓语短语的成分吗

...语里套有非谓语动词。比如：to hit running a cataiming to fly the carto jump to run homejumping running home.就是说；非谓语动词短语后面加非谓语短语，这种情况有出现吗，多不多？

问题 目的状语从句中的情态动词及其选用

...用在目的状语从句中，举些例子，如下：1.  He opened the window so that he might get some fresh air. 2.  My father got up so early that he would have enough time to pack. 3.  He came in quietly in order that he shouldn’t wake his wife.  请教老师，情态动...