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问题 invitation是表示“邀请”还是“被邀请”

His most exciting invitation was to perform on a TV programme called “Top of the Pops”.请问这个句子中的 invitation 是表示“邀请”还是“被邀请”？若这个 invitation 是表示“邀请”，句子意思似乎不通，但若是表示“被邀请”，这种用法似乎没...

问题 as引导的是什么从句

Didi has been engaged in an all-out war against Uber in China. The Chinese company has long claimed the upper hand, as it was operating well before Uber got into China.请问句中的 as 是什么意思？它引导的是什么从句?

问题 英语里不定式做定语有时态变化吗

英语里不定式做定语有时态变化吗（进行式、完成式）此外不定式做定语表示的都是将来的动作？那 He was the first guest to arrive.(他是第一个到达的客人)该怎么理解呢?

问题 work 的时态及用法

...he ____ as a teacher for five years.A. worked  B. has worked  C. was working  D. had worked答案为A. 请问为什么不选 B。work 应该是及物动词而且是延续动词吧吧？他的后边不跟表示一段时间的状语连用么？谢谢

问题 used to可以表示过去的过去吗

It was said that he liked outdoor sports, which he used to hate very much.请问这里的 used to 用得对吗? 这里的used to 好像是表示“过去的过去”呀，类似于过去完成时的用法。谢谢各位专家的解答！

问题 on Sunday与on Sundays的区别

He was left alone on Sundays when both parents worked. 星期天父母都在上班，他独自在家。这个句子为什么用 on Sundays，而不是用 on Sunday？用单数与复数有什么讲究吗？

问题 be found abandoned中的abandoned是什么成份

专家请看以下句子：The child was found abandoned but unharmed.【该弃儿被人们发现时安然无恙。】请帮我分析此句的结构，主要是abandoned在句子属于什么成份？谢谢！

问题 虚拟条件句的宾语从句的时态问题

I would not have come here if I had known he would be here.我知道这是虚拟语气，与过去事实相反，我的问题是能不能把 he would be here 改成 he was here, 这两个句子有什么区别？

问题 By the moment的相关问题

________ a man realizes that his father was right, he usually has a son who thinks he is wrong. A. After​ B. Until​ C. The moment​ D. By the time 老师，这道题目ABC是如何排除的？

问题 关于doing前面为什么用动词宾格

so anyway，there I was，standing six feet from this guy，both of us facing the wall，him shouting at his urinal about some business.这里面为什么是him呢，他做什么成分呢，谢谢老师！

问题 while从句修饰哪项内容/成分

例句：Spain's NBA champion Marc Gasol was his team's top scorer, the Toronto Raptors star hitting 33 points in the comeback victory, while point guard Ricky Rubio contributed 12 assists.问题：在本句中，while从句修饰哪项内容/成分？

问题 当某人几岁时，这个“当”可以是while吗

I lived with my grandma in the countryside when I was three years old.句子中的when可以换成while吗？老师可以帮我分析一下吗？

问题 because引导表语从句时的主语

答疑网老师好：    请老师看个句子，    A reporter asks them why they love Chian and their answer was because China has a long history.    请问老师，句中的because正确吗？可否改为that？    谢谢老师！

问题 为什么chairman前有时加the 有时不加

Mr Li was elected chairman of the meeting. The chairman announced that the meeting would be put off.

问题 with介词短语 做什么成分

...out the fact that the city center is overcrowded with vehicles.The meeting was concerned with foreign trade.请教老师.  with vehicles  是做overcrowded的状语还是center的定语.  如果是状语是什么类型的状语.with foreign trade 又是做什么成分.  &nbs...