主谓一致 语法

Question

主谓一致 语法The rest of the population 为什么用were??

Answer 1

all, half, most, none, some以及the remainder (of), the rest (of), plenty (of)等代词作主语时，要遵循意义一致的原则，即：其谓语单、复数形式要根据它们所代替的词的含义来确定
population表示“人口”，一个国家或地区的居民数目，它作主语时谓语动词要用单数形式。 当它前面有分数或百分数时，population是指一个国家或地区的全体居民，谓语动词用复数形式。
The population of Canada is about 29 million．
About eighty percent of the population of this country are peasants．
这里the rest of the population应当理解为 一个国家或地区的全体居民，谓语动词用复数形式追问

那Bob, having learned Japanese at college, offered to translate the article for me. 为什么是having learned 不是learned呢