八年级英语上册第一单元重点知识Unit 1一，Grammars:提问频率：how often1, 频率两类： 频率副词：always, usually, often, sometimes, hardly ever, hardly, never 频率短语：once a day , three times a month , every day 等2，eg: 1) He often surfs the Internet.(划线提问) How often does he surf the Internet ? 2) My mother watches TV every day.(划线提问) How often does your mother watch TV?3, 区别于对次数提问： I play computer games three times a week . How many times do you p
