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问题 because在这里有什么作用

Not only is smoking bad for your health,it's the source of social  problems in developing countries because, since profit from tobacco is very high, tobacco has taken up the best food-growing areas,leading to food shortages.请问 because 在这里有什么作用？

问题 分析成分（from customer paying to park）

它并不通过用户付停车费盈利。It doesn't make money from customer paying to park. 这个from后面是从句还是什么？

问题 悬垂分词的判断与实例分析

有这样一个句子：It was such a simple life that people were far less stressed because they had less distractions minus the noise-filled,smog-filled society giving individuals the opportunity to hear themselves think.请问这里的 giving 是悬垂分词吗?

问题 hand 作及物动词与不及物动词的疑问

"Hand in your homework!" she repeats 3 times to emphasize its importamce.老师，如何理解 hand,及物动词吗？为什么没有宾语的？

问题 if从句可不可以用进行时表将来

We want to go to the beach tomorrow,but we won't go if it is raining.如题，这句话对吗？

问题 is 后跟动词原形的疑问

All he wants to do is make love.All you're going to do is highlight it.All I have to do is learn English.我注意以上句子is后跟的都是动词原形，我不了解这一语法背后的知识，请老师解疑答惑，如果举几个例句方便理解就更好了，感谢！

问题 非谓语动的不定式

comparison may make something appear more beautiful than it is when  ______ alone. A.to seeB.seeingC. is seenD. seen为什么选seen，虽然语境是这样（see 不应该是不及物动词吗？、知道look是不及物动词），麻烦凡哥讲解一下

问题 as...作为方式或定语的区别

为什么这个句子的as是作为方式而不是定语？The editor published the article as it had orginally been written.而下面这个句子实在不明白，为什么as看作方式或者定语都不对呢？His earnings were only half the amount as they used to be. 

问题 同位语远离修饰词

...have been through to headings rather than the full story, a document which it shelves in remote locations of the inner library.这里a document是our mind liking 的同位语嘛？还想请教一下，同位语可以指代句子，从句，短语等等吗？谢谢了！

问题 Only位于句首，为什么不倒装呢？

"Plenty. Plenty. Only he wasn't guilty of it."足够了，足够了，只是那件事并不是他的罪过呀。这里Only处于句首，为什么没有倒装呢？

问题 to do 和doing

_____ you the truth, she knows nothing about it.a) Tell   b) Telling   c) To tell    d) Told  c）是正确答案。请教老师，b）是否也正确，telling 做伴随状语表示正在告诉你个事实她对这件事什么也不知道。谢谢老师。

问题 as 非限制性定语从句

_____ has been stated in the annual white book,our national defense budget per year is well below the average of develpoed countries.选项是as ,如果我想用as it has been.......这个句型，不是as引导的非限制定语从句，原句子怎么改？

问题 分析不定式 to recognize a masterpiece

He knows enough about art to recognize a masterpiece when he sees it.这里的不定式to recognize a masterpiece怎么分析？

问题 that引导的是什么从句

We knew its soldiers were religious, that they were against photography and music. 《经济学人》上的一句话。看作同位语从句？主体词是宾语从句或者religious？还是看作knew的并列宾语从句，作者遗漏了and？因为作者是阿富汗人，我怀疑可能写得不...

问题 2022广东省中考题的疑问

Tea wasn't introduced into Europe until the early 17th century. And now it has  _______  popular in Europe and America.这道题给的答案是become，请问可不可以用been呢？如果不行，为什么呢？