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问题 倒装句学习

Only over the past 30 years have scholars examined history from the bottom up.请问老师。这句是完全倒装句吗？怎么理解倒装句？

问题 what的作用

语法填空，主要是原因，句子分析以及what的作用:You can't imagine what difficulty the freshmen had ____ (consult) the French dictionary.

问题 now可以作主语吗

Now is the time to sound the alarm.now可以作主语吗?

问题 问将来天气的说法

问明天天气，经常见到的是：What will the weather be like?是否可以说：How will the weather be? 

问题 主谓一致疑问

The glass were kept hot enough.主语the glass，查了一下字典，glass是不可数名词。谓语为什么用were.记得之前学的是主语不可数名词，谓语要用单数，才能主谓一致?

问题 这里为啥不能用opened

He left the door open.为啥不是He left the door opened.

问题 doing sth as I go的意思

来自《摩登家庭》：A: What is going on with you today?B: All right. I am working this out as I go. I think maybe seeing you get all buddy-buddy today with Gloria made me feel like it did when you were with mom.请问句中的 be doing sth as I go该怎么理解？

问题 定语从句的改写

Allow me one minute in which to change my clothes.如下定语从句的改写，Allow me one minute to change my clothes. 对Allow me one minute to change my clothes in.错理解对吗

问题 both的指代问题（both books是指两本书一共还是两本书分别）

问两个简单的问题：1. Both books cost me twenty dollars.    是指买两本书一共花费了20元，还是两本书各花了20元？2. The Yangtze River is China's longest river.      也可以说The Yangtze River is the longest river of China吗？

问题 take care to do sth中的不定式是什么成分

Take care to be very careful. 注意要非常小心。Take care to avoid kinking the wire. 当心别让电线扭结。Take care to label all the disks with the correct file names.  在所有磁盘上小心贴好标有正确文件名的标签。请问其中的不定式是什么成分？

问题 until状语从句是修饰动名词短语keeping吗？

But whatever the true explanation of Barrymore's movements might be, I felt that the responsibility of keeping them to myself until I could explain them was more than I could bear. 请教老师: 宾语从句中，the responsibility of keeping them to myself until I could explain them 整个...

问题 定语从句中的 send sb sth 必须加上to吗

Mr Smith is the person who I sent my application.有书上说上面的句子不妥，应该改为：Mr Smith is the person who I sent my application to.Mr Smith is the person to whom I sent my application.如果你用的是 send sth to sb 来理解上面的句子，当然要加上 to；但如果是...

问题 关于since从句中延续性动词的含义问题

老师们，我有以下四个关于since从句，我特别想知道到底要怎么理解since从句的谓语动词与since从句的翻译，特别想知其所以然①I have known him since I was in Shanghai②I have known him since I have been in Shanghai③It's 3 years since I was in Shanghai④I...

问题 short用法

下面句子里short前面的成分是做状语吗？只能用名词吗？ Her last throw was only three centimetres short of the world record. The team was five players short.

问题 following前置和后置区别

The year following和The year following.都是表示第二年，有什么区别呢？