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问题 for引导的是原因状语从句还是条件状语从句

For controlling the movement of the vehicles or to stop them,efficient braking system is a necessity for a vehicle.句中的for引导的是原因状语从句还是条件状语从句呢？

问题 过去分词和being加过去分词，意义上有什么不同

请问老师这句话，to everybody's surprise, the meeting ended, with nothing settled. 为什么不可以写成 being settled的呢？这个也表示被动，请问有什么区别吗？谢谢

问题 从句有6大类（它们各自的作用和目的是什么）

有六大从句，它们各自的功能/目的是什么意思？例如：同位语从句，是表示强调的功能：e.g. Mr. Smith,our new teacher,is very kind to us.我们的新老师史密斯先生对我们很好。这句话的重点就是，Smith这个人。

问题 Beijing Opera（京剧）前面可以连用定冠词吗

How would you introduce Beijing Opera to someone who doesn't know about it?这是2020版高中英语北师大版必修第三册第7单元(p12)的句子。请问句中的 Beijing Opera（京剧）前面可以加上定冠词吗？

问题 好题分享(02)：现在分词完成式与主句的关系

Having been hunted close to extinction, the Siberian tiger is once again common in this area. 有人认为common 应改为rare 或句首加上Although才符合逻辑。请问各位专家和网友怎么看？

问题 这句话中what引导的是什么从句

He says that more openness in science could help to discourage what some perceive as a common practice of shutting out early-career scientists' requests for data.请问这里what 引导的是什么从句？

问题 过去完成时时态问题

新概念二68课‘No, not at all,’ I answered. ‘I’m going to …’‘Would you mind my coming with you?’he asked, before I had finished speaking.没等我说完他就问道。不太理解的地方在于，一是before后面的内容应该是后发生的，为什么这里before后面用的...

问题 bear前为何必须加can't/could't

固定搭配：can't/could't bear to do/doing sth专业老师，请教动词bear前为什么必须加can't或could't？can是什么含义？

问题 这句话为什么用不定式作后置定语

Towns also have their own special probelms.Here are some to be found in London now.这句话中为什么会用不定式作后置定语，而不是用过去分词作后置定语

问题 Originally在这2句中是什么用法

...______(origin) as a form of ancient ritual dance, it was later developed into a popular folk art.   答案是Originally，此处originally是什么用法，副词修饰什么？2. It was originally a way for small companies to rent small space in great locations. 此处originally是什么用法，...

问题 badly表示程度时的用法疑问

...eeds the money really badly.They are badly in need of help.Why do you want to go so badly?“只用于”修饰表示“需要”的动词，那其他动词就不可以，是这样吗？谢谢老师讲解！

问题 because of短语为什么只用状语不用作表语

为什么介词 because of 引出的短语通常只用作状语，不用作表语，如 His absence is because of the rain. 是错误的，而 His absence is due to the rain.（他因雨未来）却是对的。

问题 of all others是什么用法（是有所省略吗）

Dear, dear! To think that I should be late on this particular morning, of all others! 哎呀，哎呀! 想不到偏偏要今天早上迟到! 疑问：of all others 是个什么用法啊省略了吗？

问题 副词修饰全句都要加逗号吗

很多副词都能在句首修饰全句，但副词修饰全句时都要加逗号吗？为什么 anyhow 放句首有时会没有逗号?Anyhow Tony intended to acknowledge him as his son.Anyhow I must tell the truth.

问题 seated,seating,having seated等的用法

Some old people were seen ______ on the benches, chatting happily.A. having seated     B. to seat     C. seating      D. seatedD 为答案，请问理由，解释一下 seated 在这种情况下是什么用法。谢谢!