人教版新目标英语八年级上册知识要点Unit 1 How often do you exercise?重点语法：频率副词 询问别人做某事的频繁程度 提问用 How often 引导特殊疑问句 回答用 always, sometimes, twice a day 等频率副词。例句：A: How often do you watch TV?(你多长时间看一次电视？) B: I watch TV every day.(我每天都看电视。) A: Whats your favorite program?(你最喜欢的节目是什么？) B: Its Animal World.(是动物世界。) A: How often do you watch it?(你多长时间看一次这个节目？)主要频率副词的等级排序： always(总是) usually (通常) often(经常) sometimes(有时) hardly eve
