有这样一组正误句子：
误：He stayed with his family during three days.
正：He stayed with his family during the three days.
正句与误句的区别就是一个冠词，为什么 during the three days 是对的，而 during three days 就是错的呢？
...也是英语的习惯用法。也就是说，这些短语中无论有没有定冠词，hope的单数或复数都可以用。下列主要源于英文原版词典的实例可以证明这一点。例如：1. in hope ofHe began to
butter up the boss in hope of being given a better job. Of course, you...
...形容词还是名词？如果是名词，它的前面为什么没有不定冠词？
【答】be good for 中的
good 是不可数名词，意思是“益处，好处”，所以它的前面不用不定冠词。例如：
She knows it’s not good for her , but
it tastes good ! 她知道这对她...
...on 侧重国民或民族，而state则侧重指政权或国家机器(通常大写第一个字母)：China is a large country. 中国是一个幅员辽阔的国家。The whole nation is [are] rejoicing. 全国人民欢天喜地。Railways in China
belong to the State. 中国的铁路属于国家。5....