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问题 since时间从句

在含有since的时间状语从句中的主要分句能用一般过去时和用完成时有什么含义的不同？The annual assembly was held outside the Chinese mainland for the first time since its establishment in 2018.与主句改成现在完成时有什么具体语义上的不同？

问题 including的理解

...ay, several Motoball championships锦标赛（主语）are held（谓语）in Europe（地点状语）, including the European Nations Championship, the Coupe de France, European Champion Clubs' Cup and more）. 请问老师including...在这里为现在分词短语作定语修饰several Motoball ch...

问题 scarcely...when...句式的翻译

She had been in London scarcely a month when she was struck down by a fever. 请问这个句子如何翻译？它是 scarcely...when...句式吗？

问题 what 与 whatever 的区别

I took _______ was left in the bag.A. what     B. whatever请问如何选？what 与 whatever 的区别如何理解？谢谢！

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 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 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？