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问题 18-year-old（18岁的）可以省略连字符号吗

在一篇短文中看到这样一句：Mr Smith has an 18 year-old daughter, who is studying the piano at college.按我的记忆，这里的 18 year-old 应该是 18-year-old 吧！为什么省略了一个连字符呢？

问题 与on arrival（一到达）类似的表达

...做某事就”“刚做某事就”。如：On arriving home I discovered the burglary. 我一到家就发现家中被盗。2. 但“on + 名词”好像也有类似表达，比如 on arrival（一到达，刚到达）。如：So that I shouldn’t worry, he phoned me on arrival. 为了不让我担...

问题 作表语的不定式为什么不带to（主语没有do）

《新概念英语》 第四册最后一课有个句子:The golden rule here is spread your risk. 请问为什么 is 后没有 to? 谢谢。

问题 时间状语从句和if引导的真实条件句可以有哪些时态

时间状语从句和if引导的真实条件句可以有哪些时态？主句若是过去时，从句会不会有用到过去完成时表过去已完成。如：He told me to wait until the manager had come back.谢谢老师回答！

问题 should you feel worse 是什么意思

There are now many patients waiting for consultation, we cordially request for your patience to wait for about 2~4 hours. During this period, should you feel worse, please call our nurses at the Triage immediately.我知道should you feel worse是if you should feel worse的省略倒装，但是这...

问题 to begin with与beginning with的用法

To begin with, what I intend to stress is that we are about to start our next lesson in Classroom 8 of the Teaching Building at 10 a. m. next Friday. 请问这里的 to begin with 可以改成 beginning with 吗？为什么？谢谢专家！

问题 介词后引导宾语从句时用how与whether的区别

We have to face the question of _____ they have found our secret. 给出的答案是填 how，但是我觉得这里填 whether 好像也讲得通。像这样没有明确上下文的名词性从句的题目是不是答案都不唯一？万分感谢！

问题 to do还是to have done

... after doctors completed a 20-hour operation _______ one-year-old twins at the head.A. to separate B. to have separated  老师，您好。此题究竟选A还是选B，我一直困惑不解。有人说只可以选A，有人说必须是B。您的看法是什么呢？为什么？ 

问题 be thrown about是系表吗

I didn't like the idea of being thrown about in a boat on a rough sea.我不喜欢在浩瀚的大海船上被乱掉的主意，理解为being thrown about是被动语态也不对，还是理解成动名词词性...

问题 may可以表达理论上的可能性吗

...中一条解释是一样的。例句为Up to five inches of snow may cover the mountains.我理解这个“ 有时或某些情况下属实”属于“理论上的可能性”， 请问对吗？谢谢。

问题 have sth done还是have done sth

Mrs.Brown was much disappointed to see the washing machine she had ______ went wrong again.答案是repaired，为什么不能用it repaired呢?我的想法是这台洗衣机不是Mrs.Brown自己修的，而是她请人修的，所以填了had it repaired。

问题 两个动词短语用法的辨析

一道选择题： Doctors warned that the bad weather would _____ more cases of flu. A. result from         B. bring in              C. result in             D. bring on 主要是纠结于C选项和D选项。 C选项result in在牛津词典里的解释为：to ma...

问题 be good for doing 与 be good to do

This is because the juice from tomatoes is really good for making surfaces clean.请问句中的 for making 可以换成 to make 吗？

问题 句子结构分析

From children's names,it can be inferred what kind of people the parents want their children to be or what kind of life they expect their children to live译为：从孩子的名字可以推断出父母希望孩子成为什么样的人，或者期望他们过怎么样的生活。做四级翻译时...

问题 set an example to/for（介词区别）

They're also setting a great example for others about how to make the best o a bad situaiton.句子摘自北师大高中英语必修第三册第8单元(p43)。请问句中的介词 for 能换成 to 吗？若可以，set an example for 与 set an example to 有区别吗？