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问题 telephone是一种machine吗

有这样一个句子：When did the telephone become an indispensable machine?写这个句子的人认为 telephone 是一种 machine，是这样吗？

问题 英语句子的逻辑关系判断

You have the friend that you wish for；someone to cry with you over your sin.请问这里是什么逻辑关系？还有 over 在这里是什么词性？

问题 过去完成时？

In England tea didn't appear until 1660, but in less 100 years he had become the national drink. 这里用了过去完成时had become， 过去完成时是过去的过去，这里had become是在强调发生在哪个过去动作之前的？谢谢，盼着专家老师解惑。

问题 be considered admitted 结构分析

If..., the allegation is considered admitted. 其中 admitted 是过去分词做主语补语吗？期待指教！

问题 祈使句可以做宾语从句吗

比如：Please be reminded (that) don't go to the basment.这个句子是否正确？

问题 句子成分分析

They think that this will lead the ancestors back to earth.划线这我把它认为     谓语+宾语+宾补但是还有人认为它是  back  to earth 看做状语，所以到底哪种是对的呢，谢谢!

问题 taste 和try

The food in that restaurant is quite delicious. Let's ___ it. A try   B taste   这里选择A符合语境，B为什么不合适呢？

问题 句子成分划分

老师好，请问句首的craft作何成分？Officially an experimental craft, testing new propulsion systems and imaging devices for spotting space debris, American scientists and military leaders have watched the sj-17 perform remarkable manoeuvres.

问题 NP是否外置的判断

It is astonishing, the degree to which a high-tech,postmodern society still depends on low-tech, pre-modern labor.

问题 星期前不加介词

请问一下，The 2019 World Artificial Intelligence Conference was held Thursday in Shanghai  这个句子中为什么Thursday前不加on，而被省略。   谢谢老师回答了。

问题 down是介词还是副词的区分

He rolled his suitcase down the hall. 这句话里面down是介词还是副词？

问题 定语从句引导词where

I’ve been very careful about the companies where I apply.当从句中缺少地点时，引导词用where，此句好像不是缺少地点状语，为什么用where？

问题 关于单宾语的被动句

The walls were ruined in wars.I was beaten by him.这两句的介词短语分别做地点状语和动作状语吗。都没有宾语。单宾语被动句本身没有宾语。

问题 副词是否能修饰be动词

where is the toilet.1.副词是否能单独的修饰be动词。2.where是疑问副词 ，在这句话中 where 是在修饰is么。

问题 不及物接同位语从句疑问

The story goes that William killed his wife. 为什么goes不及物可以接从句？