this kind of car sells well
the 2 kinds of bread sell /sells\
a group of boys are /is
this pair of boots is / are
2 thirds of the earth is /are
类似于这种单复数的东西我一直搞不懂。到底看of 前面还是后面,可是听老师讲讲例句好像有的时候看前面的有的时候看后面的,有没有高人告诉我到底怎么区分啊
还有
teenage problems
teenager performers
voluntary work
vonlunteer doctors
men teachers
men's clothes
为什么同样是修饰名词,有的要加所有格就是’s,有的要加形容词形式,有的直接名词形式啊?怎么区分呢?
如果有特别好的,我会除本来的50分以外另外加加赏分的,希望大家具体一点跟我解释一下,让我能够弄懂