问题 tuck sb in/up的词典解释

牛津词典给出的解释是: to make sb feel comfortable in bed by pulling the covers up around them. 意为把...的被子掖好我想问下pull up这里应该怎么理解？pull是拉起来的意思，up作小品词可以理解为改善吗？

问题 ​to/on/in the north of

to/on/in the north of……中的介词都可以省略变成north of ……吗？还有The Great Wall is north of Beijing中省略的介词是什么呢？这两个问题我实在找不到答案，谢谢各位大神帮忙解疑。

问题 in the need to do sth 的理解

These firms have been given a tough lesson in the need to diversify their markets.请问红色部分怎么理解？

问题 in the 1980s中的1980s是复数吗

在 in the 1980s（在20世纪80年代）这类用法中，1980s是一种复数吗？有人说它是复数，但我觉得它不能算是复数吧，因为 1980s 并不表示很多个 1980。如果说它是一种复数，有相关的依据吗？

问题 虚拟式

请问老师虚拟式和虚拟语气有区别吗?我的理解是虚拟式是一种谓语动词的变化形式，我们通过虚拟式构成虚拟语气。网上有说虚拟式和过去式都是英语语法范畴中的“式”，请问这个“式”是什么?是不是虚拟式和过去式原本是...

问题 分析：A friend in need is a friend indeed.

我知道 A friend in need is a friend indeed 是一句谚语，意思是：患难见真情。患难朋友才是真朋友。患难之交才是真朋友。但我对这个句子的结构不甚理解，主要疑问有二：疑问一：句中的 in need 是什么意思？作什么成分？疑问二：in...

问题 There was making leaf houses in autumn 是否有误

...考英语浙江卷1的七选五阅读：Another habit I formed early was being outdoors. My parents made it a point for their two kids to spend time outside, no matter the weather or season. My brother, of course, raced off to be with his friends, while I had plenty to do myself. There was making le...

问题 is based后面为什么没有介词in

The plan needs to include Operational information such as where you business is based, who your suppliers are and the premises and equipment needed.is based后面为什么没有介词in？

问题 the following month前面为什么不加介词in

老师，这个the following month前面为什么不加一个介词in哇？

话题 疑问词 in what other ways

话题 最高级后面接介词in还是of

问题 but beyond可以用作插入语吗

The country all looked dark gray, but beyond, at the very end of the world, the sea showed pale.but beyond 属于插入语吗？词性是介词吗？

问题 什么叫短语动词（动词+介词算短语动词吗）

请问什么叫短语动词？动词后面接副词算是短语动词，如 look out, look around 等；但动词后面接介词也算是短语动词吗？比如look at, look for, look around 等算是短语动词吗？谢谢！

问题 so...that引导的倒装句

在讲到部分倒装时会举这类例句：So cold was the weather that we had to stay at home.但主句中weather后没有成分了啊，主系表完全倒置了啊，不应该是完全倒装吗，请解答

问题 语法代词分析

I was on my way to the bookstore and was waiting the green light at a crossing when a girl of about ten was knocked on by a passing car, it drove off quickly.此句说是要把it改为which，因为是非限定定语从句，可是如果把when引导的从句看成时间状语从句，而it drove of...