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问题 crossroads还是crossroad的疑问

She says she has come to a crossroads in her life and must decide which way to go. 请问这里的 crossroads 为什么要用复数？

问题 人称代词的指代问题

—-Could you please wash the clothes? —OK, I'll do _______ in a minute. 选项答案有 it/its / they / them。我选了it（理解为指代这件事），答案给的them。请教大家为什么!

问题 动词不定式做定语

各位老师好，下面这个句子：In many ways, they are the luckiest group of young adults ever to have existed.  为什么要用to have existed，用having existed 不行么？谢谢老师。

问题 定语从句be动词

A word is one and more sounds that in combination with a specific meaning assigned by a language. 这是个正确的句子，但我觉得that后应有一个are，请问老师是以上原句正确还是我的观点正确呢？ 谢谢老师!

问题 south的用法

In, from, or toward the south 在南方，从南方或朝南方这是美国传统英汉双解学习词典给出south作副词的释义，请问老师，这里的from 和toward是不是相互矛盾了?我查看了其他几部字典，south作副词时，没有from the 的south的用法。是字典有...

问题 句子翻译疑问

A second study,comparing 1,167 people with melanomas to 1,101 who didn't have the cancer ,found that using sunscreen routinely,alongside other protection such as hats,long sleeves or staying in the shade,did give some protection.这里的alongside该如何理解？怎么翻译是好？

问题 As从句的理解

James Brindly was a pioneer in the art of building canals or, as it was then called, 'navigation'. 请问老师，这里as引导的是时间状语从句吗？为什么这里有个or，or后面没有主句了呀。

问题 这个句子语法上有问题吗

Slightly changing in lifestyle can make a huge difference and reduce the impact of our daily activities to environment.

问题 That从句疑问

Jason Sheltzer, a molecular biologist at Cold Spring Harbor Laboratory, in New York state, who is investigating the matter, reckons it possible that nicotine, which interferes with this process, may lessen the damage.这里reckon it possible that是状语从句？

问题 set of circumstance 意思

A happy person is not a person in a certain set of circumstances,but rather a person with a certin set of attitudes. 

问题 句子成分

The Silk Road was named after ancient China’s silk trade which played an important role in the civilization development of China, South Asia, Europe and the Middle East. 请问老师这句的句子成分如何划分？ 为什么名词civilization后面紧跟了名词development？ 中间不需要...

问题 with flu中的with是什么用法

I was in bed with flu for ten days.

问题 such as的语法分析

Children do not use inflections such as are used in mature adult speech.请问句子中的such as属于什么用法，such as是习语吗？它们作什么成分？

问题 should的问题

Should you be caught in a lie, your punishment shall be grave indeed.请问这个句子should的倒装有问题吗，以前学虚拟条件句的should可以倒装，但这里主句用了shall，又似乎说明这是真实条件句，所以这到底是虚拟语气还是陈述语气？是否应该把s...

问题 两种名词形式的区别

We live in an age of rapid technological advance/advancement.advance本身可做名词，表示“发展”的意思，advancement在advance后加后缀，构成名词，也有“发展”的意思，那么，advance和advancement两者在表达上有什么区别？