they are of an age.为何可以用an?age不是不可数名词吗,那么应该在the和零冠词选择,怎么能用an呢?难道是固定用法吗

they are nearly of an age these doors are of a size 为什么要用一个of? 高中英语冠词1They are twins,so they are of ______ age.填入冠词 为什么选an,而不用the they are of the same age 和 they are the same age有何区别 They were the same age.和They were of an age.哪对? They were of an age.动词为什么用过去时? They were of an age.动词为什么用过去时? we happen to be of the same age.we happen to be of an age.第二句话为什么错?不是of a/an 表示同一的,相同的吗?比如说they are of a kind.他们是同一类人. they are of an age.为何可以用an?age不是不可数名词吗,那么应该在the和零冠词选择,怎么能用an呢?难道是固定用法吗 They were of an age.这里为什么用of什么用 They are of the same age.他们同龄.这里的of是做嘛的啊? The three boys in this group are said_______.A.to be a same age B.to be of an age C.being the same age D.being an age这倒题很难，听别人说是2008年高考题。 Jim and I are the same age上面的句子转成下面的句子是Jim and I are of the age 还是Jim and I are of an age. Male and female students are quite different from each other______ the age at which they begin to develop an intellectual self-discipline.A.with regard to B.in the light of C.in honor to D.on account ofB,WHY? of age,of the age,of an age 用法是什么网上搜过了都没有 根据首字母填单词Though they are at the same age ,there are lots of differences b_____ them越快越好哦~ 他们俩同龄.书上的例句是They are of the same age. 我想问的是,可不可以写成：They are the same age.可不可以写成：They are the same age. 这也是系表结构啊?再者,可不可以写成：They are in the same age.如果不 They are put on an exhibition of French paintings next 这个英语笑话是什麼意思?joke of the day - an age-old questionAn elderly couple who are both widowed have been courting for a long time.They decide it's finally time to get married.Before the wedding,they go out to dinner and talk about how