问题 while,during,when表示时间的区别

_______the first decade of the 19thcentury, the velocipede, the forerunner of the modern bicycle, lost favor temporarily. A. While B. It was C. During D. When 

问题 时态分析，这句话中主语found为过去式，从句fell也为过去式符合语法要求。但是为什么at hom

A recent study found that the number of Americans with high-speed Internet at home today actually fell during the last two years 请问today是时间副词作状语吗，如果是那么fell用过去式是不是错了？？

问题 This is the first/second...time that...的变体

常常见到 This is the first/second……time that sb has done sth. 这是谁第一/二……次做某事。那么我们要表达“这是谁第一/二……次可以/愿意/可能/允许……做某事”该如何表达？

问题 a quite short time有错吗(涉及不定冠词与quite连用时的位置)

...放在 a 或 an 的前面而不是后面，所以：要说：quite a short time 相当短的时间不说：a quite short time 相当短的时间但我在语法书上看到：若名词前有形容词修饰，则a (an) 放在quite / rather之前或之后均可。如：It’s quite a sad story. = It’...

文章 “go on doing结构” 的深层分析

...如：go on (a) holidayI'd love to go on a holiday but I can't afford the time.我倒想去度假,可是抽不出时间来。go on a tripAs the day was fine, they decided to go on a trip.由于天气好,他们决定作一次短途旅行。go on a tourWe are going on a tour of the city this afternoon...

问题 go through与been though区别

...rough hell making this record  They had gone through some rocky times together when Ann was first married

问题 可以有两个简单句同时作宾语从句吗

I mean, we're in the car, we're fighting traffic，basically just trying to stay awake.we're in the car, we're fighting traffic 这是两个简单句，可以同时做宾语从句吗谢谢啦

问题 but的用法

He always does the work, but in his own sweet time.He tried to save it, but in vain.这两句话中，but词性为连词吗？连词的话前后内容可以不并列吗？

问题 不定式分句作名词的后置修饰语的时候省略关系词的问题

...的时候，该不定式分句里的关系代词和关系副词的省略与定语从句高度类似，那么，是不是说明，只有现在分词、过去分词、形容词这三个作名词的后置修饰语不可以看成关系词的省略，不定式作名词的后置修饰语的时候关系词...

问题 抽象名词如ability何时用复数何时用单数，有规律总结吗

问题 “奶粉”可以用 dry milk 表示吗（可以用 dried milk）

问题 when后面为什么有个was that...的表达

A week ago, when the conventional view was that the Senate would remain in Republican control, it looked as if the ambitions of Mr Biden’s administration would be limited to what he could accomplish through executive orders and appointments to regulatory agencies.when后面为什么有个was that....

问题 双逗号之间的成分分析

...它结构不完整，应该是省略了“which is”，但是非限定性定语从句不能这样省略，不过它应该是个定语成分；我又查阅了插入语的一些说明，看到插入语可以是成分不完整的，如果是这样我想知道插入语的使用有什么限制；我也...

问题 having sb doing sth作主语

Having my brother and his wife living nearby was an ideal arrangement for our family.主语是一个从句，这个从句不太理解是怎么构成的?Having sb living 这个为什么用having 形式，为什么living 用ing 形式？

问题 made called用法疑惑

请问老师：made called这里是什么用法？made和called是两个过去分词作后置定语修饰 agreement 吗？可以直接连在一起用吗？求指教！In 1965, there was an agreement made called the Auto Pact and it provided free trade in cars and trucks.