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问题 英语句子成分分析

In China, square dancing is a great outdoor sport for old people to do with a group of friends.求：英语句子成分分析！谢谢！

问题 这是虚拟用法吗

New materials can be inserted into its DNA to give the plant or animal qualities which it would never have in nature.划线部分是有所省略了的虚拟语气吗？

问题 begin doing ...

Foreign nationals have begun leaving because of a sharp rise in violence.  因为暴力活动的急剧增加，外国人已经开始离开这个国家。begin doing 和 begin to do 是一样的吗？

问题 英语常用缩略语分析

经常看到如下的英语形式，不知道是什么完整形式？包含了什么语法点？请老师帮忙补全，谢谢。to be continueddirected bymusic bypowered by

问题 翻译问题

The hypothesis of natural selection may not be a complete explanation, but it led to a greater thing than itself---an acceptance of the theory of organic evolution, which the years have but confirmed. 此句翻译遇到困难，求帮助!

问题 介词 before 引导什么从句

We still have a long way to go before we can do sth.请教下，before 介词引导了什么从句？

问题 involving的相关问题

Being involved in community service does good to improving teenagers’ comprehensive abilities. 老师，这里是动名词做主语，这里的Being involved,可以改为involving吗？

问题 That is用法

He sacrifices himself to his country, that is, he is a hero. That is可以连接两个句子吗？that is的逗号是否可以改为句号?

问题 两个句子的连接问题

the committee members come togther to make decisions for the group they represent   这个句子明显是两个句子，但是没有逗号分隔怎么取分析这个句子，

问题 省略成分

Many adults may think they are getting enough shut-eye,but in a major sleep study almost 80 percent of respondents admitted to not getting their prescribed amount of nightly rest. 请问老师study后面是不是省略了什么？谢谢

问题 that 的用法

The cellphone allows people to show strangers that they belong, that they are part of a community somewhere. 这句里的第二个that是用作什么啊？这是两个并列的定语从句吗？

问题 独立的句子变为不是句子

global temperature rise 是一个独立的句子，不能放在及物动词之后改为  this causes global temperature to rise  就是正确的，为什么？

问题 省略are不对吧

This requires investing in technology; the few banks already selling custody subcontract tasks to specialist firms.我觉得selling前are不能省。各位老师怎么看？

问题 从句的问题

He doesn’t have a clue who’s responsible.这个句子是不是不正规，who’s responsible前是不是省略了介词to或者about等介词？因为clue不等于who's responsible，所以这应该不是同位语从句吧？

问题 on的用法

He said, on her income, with some changes, she would be able to buy an investment unit within two years, which she did.句中的介词on是什么意思？