When we let it ring from every village and every hamlet(这个句中的village和hamlet后面为什么不加S?

问题描述:

When we let it ring from every village and every hamlet(这个句中的village和hamlet后面为什么不加S?
1.I did learn a lot from this international student(这个句中为什么要用一个did呢,有什么特殊作用还是非用不可呢?)
2.He seemed taken aback,"I thought you Chinese have walls for everything."(这个句中对话的直接引语为什么用了过去式,直接引语不是要用一般现在时的么?)
3.The copy in law school was gathering dust on the shelf(in后面怎么不需要加冠词,如果是零冠词的话,那又是出现在哪些情境下)
4......not only to unify all its libraries but also to......(请告诉我not only后加to的用法)
(之前没好好学语法,现在决定从头开始,望各位英语高手多多指教!本人QQ303827499,若是帮助我解答问题的请在验证信息里说明,不胜感激)

every / each + 名词单数1.I did learn a lot from this international student(这个句中为什么要用一个did呢,有什么特殊作用还是非用不可呢?)2.He seemed taken aback,"I thought you Chinese have walls for everything."(这个句中对话的直接引语为什么用了过去式,直接引语不是要用一般现在时的么?)1) 助动词did表示强调,也可以不要,那么动词变成learned2) you Chinese have walls for everything 是一个常识,所以不论主语是什么时态,从句都有一般现在时。