请教老师们，When most of us get a text message on our cell phone
from an unknown person, we usually say＂sorry, wrong number!＂and move on. 此句中的直接引语前需要加逗号吗？若不需要，为什么？和平时一般的直接引语有什么区别？
A new laptop costs about _____ of a second-hand one. A three times the price B three times more than the price C three times as much as the price老师好！这里的A是对的，B为什么不对？C是我自己写的，对吗？
Developing (develop) and changing for thousands of years, Chinese poetry is like a beautiful and fathomless ocean to which Chinese-speaking people couldn’t help being drawn.From the moment we had left (leave) port and sailed into the Engilsh Channel,the weather had got worse and worse.这两个空...
...高中教科书里的一句话：A shocked Winton watched as the majority of people rose to their feet.我在国外一个网站看到这样一段话，也是watch as(如下图所示)，请问这里面的watch是什么意思，as从句又起什么作用？我感觉时间、方式和原因什么的都...
...认为这是动态动词转意为静态动词。 3 时间状语（adjunct
of temporal location）时间状语可以表示一个状态持续过程中的一个点，但却不可以表示一个非进行体的事件持续过程中的一个点。When he left she was still at her desk. (状态)他离开...
If they give in, they feel regret and resentment over having been a pushover. 1. regret, resentment在句中是不是作名词用，在句中是不是共一个介词over？2. regret for主要是对自己的过失感到遗憾或后悔, 后接名词或what从句；regret at（over）表示对别...
定语从句中当先行词前面有 the first, the last 这种序数词修饰的时候引导词真的只能用that 吗？Liu Yang is the first woman astronaut who has ever traveled in space.这个例子不就是用的 who 嘛，请问这是为什么呢？
-Good evening. I _____to see
Miss Jessic.-Oh! Good evening. I'm
sorry, but she is not in.A. came B. come
C. have come D. had come给出的答案是have come，为什么会用现在完成时呢？自己做题的时候就只能排除一个had come。came和come又该怎么排除呢？
from 是介词，他后面可以加 where么？where 应该是副词，介词后怎么能加副词呢？
比如以下例句中的 from where：
We went up to the roof, from where we had a good view of the procession. 我们爬上屋顶，从那儿可以很好地观看游行。
Dieting can be bad for you, not least because it is a cause of stress. 节食可能不利于健康，相当重要的原因是它会引起精神压力。我对这句话中的 not least because… 不是很理解，为什么会翻译成“相当重要的原因是……”呢？这是固定搭配...