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问题 condition何时用单数何时复数

Even more serious difficulties include freezing weather conditions and heavy storms.这句话中condition用了复数，但是练习题中condition答案给的单数，请问老师：怎么理解何时condition用单数，何时复数？

问题 being等的用法

Words of encouragement create social capital as it makes the person who is being appreciated feel a sense of worth and make him or her a nicer, happier being.capital：表示资本吗？as 表原因吗？being是什么意思/用法？

问题 用the和a的区别

The model plane and a book are on it.为啥model plane前面是the，而book前是a？因为model plane是确定的特定的嘛？

问题 说 go seeing sb 有错吗

He has gone seeing his uncle and aunt.上面的句子有错吗？我是根据He has gone swimming 写的。

问题 but, yet 是连接副词

Museums play an important role in preserving and showcasing cultural heritage. But/Yet have you ever wondered where museums get their exhibits? 请问：But/Yet是连接副词吗？谢谢。

问题 surface-to-sea missile 请问到底是“地对地导弹”还是“地对舰导弹”

老师：早上好！surface-to-sea missile 请问到底是“地对地导弹”还是“地对舰导弹”？我在网上查了，发现有这两个意思，所以不清楚到底哪个是正确的。谢谢。

问题 They will not return for many days to come.的翻译与分析

They will not return for many days to come.怎么翻译？在这句话中 for 起什么作用？for 在表示时间的时候怎样具体使用？有什么需要注意的？

问题 I told him go make up his own shirt.（省略了两个to吗）

I told him go make up his own shirt.是省略了两个to吗？

问题 介词 in, on, of, to 区别

比如以下例句：计算机处理能力的实际成本下降了30%30% decrease in the actual cost of the computer porcessing capcity .这里为什么用in？政府对一些产品实行了出口管控the government imposed export restraints on some products.这里为什么不是in?

问题 请教老师of所有格和in relation to之间的关系

Pavis' own proposal is a theory of 'vectors', which permits a mapping operation of different aspects of the stage in relation to each other in ways which have more in common with graphical communication than with language. （第一种翻译）帕维斯自己的建议是一种“向...

问题 It is fun后接动词是用to do还是用doing

Some pupils think it’s fun ________ (try) the teacher’s patience. 请问句中的空格处是填不定式 to try 还是填现在分词或动名词 trying？还是两者都可以？若填不定式和动名词都可以，它们有区别吗？

问题 so that引导的目的状语变so as to不定式

句子一：She walked into the house quietly so that she wouldn't be heard. 句子二：She walked into the house quietly so as not to be heard. 为什么句一状语从句有would，转为句二不定式结构没有would ? 感谢您的帮助!

问题 You mant so much to walk the path expected of you.

狮子王中一句台词：You mant so much to walk the path expected of you.你一直太在意别人对你的期望。请问老师：expected的成分。

问题 much less;Not to mention;let alone区别是什么？

都是连词吗？

问题 一个句子可以有多个宾补吗

...，谢谢您查看我的问题。在这个句子 Dumbledore sent him off to Romania to live in a colony. 中，请问这里 off, to Romania 和 to live 是同时作 him 的宾补吗？查了字典有 send sb + adv./prep. 和 send sb to do sth 的用法，请问这一个句子是不是同时存在3...