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问题 为什么不用过去式

Water shortages do not have to trouble the world-if we we start valuing water more than we have in the past. 不懂这个have，为啥不用过去式？

问题 不定式作目的状语还是定语

Let's find more things to put in the machine.它符合动宾，看作目的也很通顺，是否两种解释都可以?

问题 非谓语动词

I took a variety of pictures showed the present pollution of our city.这是一道改错题，答案用的是showing 在这个句子中showing the present...现在分词短语这里是后置定语还是伴随状语，可不可以用to show表目的呢，为了展示本城市的污染状况，我拍...

问题 as-从句的理解

He has since deleted the post but all of the NBA's official Chinese partners have now suspended ties with the league as it continues to grapple with the fallout.如何理解这里的as？

问题 请教老师一个冠词问题

定冠词+名词+泛指性后置定语是否可行 I happened to meet the headmaster of a  famous school when I sauntered in the street 我想知道，the headmaster of a famous school是否说得通，烦请老师指点指点

问题 有没有宾语前置句？

The tremendous changes new technology will bring to people's lives.这个来自六级听力考试的一个选项。它不是一个句子，只是一个短语，只是省略了问题的主干。但是有人说这个是宾语前置句。请问是这样的吗？

问题 关于疑问不定式作主语疑问

what to do next is discussed.为什么不定式作疑问主语没有主语？百度看到的例句。

问题 这里was come怎么理解呢？

But now Mike's turn was come to be surprised.但是现在轮到麦克惊讶了。这里was come怎么理解呢？

问题 on its way ahead

请问it has to overcome new challenges on its way ahead.请问ahead 是作副词修饰介词短语on its way 吗？

问题 or引导什么句子

Head injuries are often fatal, or of sufficient severity to require the hospitalization of victims。请问or是引导并列句吗？or of中的of在这里做什么用？victim是“受害者”的意思，用在这里来指代“病人”合适吗？

问题 表示时间段的介词for

She devoted herself to teaching for forty-five years.这里表示一段时间用介词for,那还可以用什么词呢？

问题 Advise的虚拟用法

If high schools were to advise students that some education beyond high school is not necessary for everyone, there is a little bit of a concern that..请问老师这里的advise表示建议，为什么不用虚拟？

问题 难句理解

But my increased self-awareness is linked to an interest outside myself in another person.这句话该如何理解?这句话出自Robert E.Wagoner的The meanings of love这本书的前言，也是精读哲学与文明这本书的课文内容。不是很能理解这句话，希望老师能解答，...

问题 介词的选择

...，英文论坛里有如下三个表达方式的讨论：1. Leave it for tomorrow.2. Leave it until (till) tomorrow.3. Leave it to tomorrow.我平时阅读获得的语感倾向于leave it for tomorrow,但自己又解释不出为什么。烦请老师指点迷津。谢谢老师

问题 这句为什么没有主句

When a better way forward might be to start strategically letting a few people down.请问曹老师，forward在这里是什么用法？还有这个句子没主句吗？谢谢！