问题 the extent to which为什么要加to

各位老师们，红线标注的 the extent to which 为什么要有这个 to, extent后面不是一个which引导的限制性定语从句直接修饰extent 吗？为什么要有to 呢？我知道有一个短语是to the extent, 但是不明白这个句子为什么要有to. the extent to which…...

问题 at 21-28 days为什么用介词at

...对其中的 at 21-28 days 不理解，为什么用介词at呢？ They are weaned and capable of flight at 21-28 days. 这个句子出自State University of New York College of Environmental Science and Forestry的一个网站页面，因此应该不会是错的。想请答疑网的专家老师...

问题 根据首字母填空或者根据适当单词填空

A lovely e____of cartoon characters is on in town.Have you seen it ?My neightbour has an a_____habit. He likes playing music very loud at night.I didn’t think that I had a gift for acting,and I am not a “lady”_____Juliet

问题 被动语态后面的介词短语看做状语还是主语补足语

She has argued that wild animals should be left in the wild and not used for entertainmen or advertisements.that 引导的宾从么 可以省略么？should be left 是被动语态吧 那后面的in the wild 看做状语对吗，有人说是主语补足语。

问题 which在定语从句中的用法a

In 2012 a federal court threw out a case brought by residents of Mis-sissippi against 34 big carbon emitters for harm resulting from Hurricane Katrina, which they argued climate change made more destructive.请问which的先行词是哪个？它在从句里面又做什么成分？

问题 all-Speak up是什么意思(为什么要大写)

牛津英语课本有个标题：Sunshine for all-Speak up.这里all-Speak up是什么意思，为什么要大写?

问题 句子成分问题(as much as)

这是个电影台词：But as much as I fear war between Earth and Mars, I fear the peace more, for that is when they will turn their sights aback on all of us.请问这句话中的as much as该怎么理解或分析？感觉有种让步的意味，想知道这是否有分析的价值呢？

问题 as做补语的用法

...esponses indicate some misconceptions in basic scientific knowledge of rainforests’s ecosystems such as their ideas about rainforests as habitats for animals, plants and humans and the relationship between climatic change and destruction of rainforests.这句话里加粗的as所引导的名词短...

问题 the first后面接过去分词（为什么不是不定式）

It’s the first festival created by China specially for the country’s farmers.这里的序数词加名词后为什么不是不定式做后置定语？

文章 使用nice and 时应该注意的问题

...育部审定（2012）的义务教育教科书英语七年级下册（Go for it ！）第75页上，有这样一个句子：“ This sofa feels nice and soft . 这沙发摸上去舒服、柔软。”（人民教育出版社出版发行2012年10月第1版）笔者认为，这个句子的汉语译文...

问题 to do省略to的情况

have nothing to do but do中的but后可以加to 吗？是只有作表语时to do才能省略to吗？什么时候省略呢？

问题 介词to和不定式to的几个问题(请曹老师回答)

您好，曹老师，几个介词to和不定式to的问题，请您指点下：1. 我感觉没有具体的区分规则，不知道是不是我认识不够呢？2. 有些摆明了是介词的to，但词典却也有to do的用法，这该如何理解呢？如commit to do3. 也有很多介词to，似...

问题 inviting / to invte(涉及句式write to sb doing/to do)

One day a middle-aged woman wrote to a doctor INVITING him to have dinner at her house.不能理解为什么填写INVITING, 而不是TO INVITE ?

话题 不定式to look at， to talk to用法疑问

问题 to be done和to do

A lot of work to be done, he had to go to the office quite early.A lot of work to do, he had to go to the office quite early.这两句话哪个对，哪个错？错在哪了，请详细说明。之前的解答有的没看懂。