刘晓娜刘晓娜1ppt课件 Tasks for today-grammar part1.单词：恰当地使用频率副词及短语2.句型：谈论某项活动或行为的频率3.练习和作业2ppt课件What is adverbs of frequency?What is adverbs of frequency?什么是频率副词？一般用来表示动作发生的次数或频率。3ppt课件Words preview how often once twice time hardly ever 多久一次多久一次adv.adv.一次一次adv.adv.两次两次n.n.次；次数次；次数adv.adv.几乎不；几乎没有几乎不；几乎没有adv.adv.曾；曾经曾；曾经4ppt课件Words previewalwaysusuallyoftensometimesneveradv.adv.总是总是adv.adv.通常通常adv.adv.经常经常adv.adv.有时有时adv.adv.从不从不5ppt课件6ppt课件once a monthtwice a monththree times a month2013other expressio
