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问题 behavior 和 behavioral 的区别

The behavioral sciences has been slow to change partly because the explanatory items often seem to be directly observed.既然名词修饰名词作定语，表示分类、类别、用途等，这里的 behavioral 可以改为 behavior 吗？即 behavior sciences 表示行为一类的科学。

问题 school的含义(指中小学还是也包括大学)

My two sons and one daughter are all in school. 请问这里 in school 指的是他们在上中小学，还是也包括大学的可能？

问题 Be taken up doing 结构

All my time is taken up washing clothes.  请问老师，sth be taken up +doing 是什么用法？是sth be taken up in doing省去介词in的用法吗？ 为什么不是 sth be taken up to do ? 

问题 关于make的用法

...时，不定式短语则必须带to。如：Filth and high prices have combined to make London and other cities depressing places to live in．请问，以上说的主语补足语是不是 to live in？这句话从哪里可以看出来是被动结构？ 

问题 so / such...that.... 语法分析

新概念三里有一句话：He was in such a bedraggled condition that an assistant refused to serve him. 这句话的语法分析可不可以理解为：主语he，谓语系动词 was, in such a bedraggled conditon是介词短语作表语。that 从句是结果状语。这样分析，对吗？

文章 高中英语新教材-教学参考资料-疑难解答-人教版-必修3-U3

...3单元（每日更新）▲P25▲its 的指代问题▲P26▲from around the world 的用法▲P27▲when doing sth 如何变成从句（如何确定时态）▲P28▲near downtown 还是 near the downtownhead to a place 与 head for a place关于do a good job of doing sth 的替代用法▲P29...

问题 broken up的含义

The graceful wooden windmills that have broken up the flat Dutch landscape for centuries. 译文：风车在荷兰平原上优雅地矗立了几个世纪。 句中broken up查字典，怎么也对不上译文，请专家指教，谢谢！

问题 方式副词用于祈使句句首

...使句，它把方式副词放在了句首，也可以吗？Slowly depress the accelerator / brake pedal. 慢慢踩下油门／刹车踏板。我总感觉应该是：Depress the accelerator / brake pedal slowly. 慢慢踩下油门／刹车踏板。

问题 Who作主语时谓语用单数还是复数

Who ______ seen the accident besides the boy?填 have 还是 has? 即：Who 作主语时谓语用单数还是复数？

问题 关于however一词的疑惑

It is their duty to witness the horrors of the world and record them,however terrible and unpleasant they may be. 这里的however可以用althought或者despite替换吗？都是表示让步，为什么这里只可以填however呢？

问题 be worth的一个词组各成分解读

A is worth the same as B，这是主语言A+be动词+worth(形容词)+the same (名词)+as(介词)+宾语B吗？

问题 关于having been done和done

The agreement________(sign), they shook hands for the photographer.答案是signed,用having been signed可以么？

问题 ​broken为什么在it后面

Apart from the interesting-looking cup, the box was full of crockery, much of it broken.请问老师，如何理解broken？adj不应该放在前面吗？为何后置？

问题 省略句补充（​No more smile...）

No more smile, no more chitchat. Only the drip drip drip of the rain.请各位老师帮我补充一下这句话。

问题 最高级加形容词of的用法

the simplest of reasons 为什么要加个of呢？ 不可以直接the simplest reasons吗？