Unit2 Lesson 13 Exercise,教学目标,重点单词： Exercise，ride，walk，run，play, minute, hour 重点句型： How often do you? How many,Ride,骑（车，马,Walk,走,Run,跑,Play,打，玩（,Play 篮球,Play 电脑游戏,ride,walk,run,play,Exercise 运动,minutes,hours,分钟,小时,exercise,锻炼,1 day=_ hours An hour=_minutes 1 month=_days _days=1 week _months=1 year,How many_? 多少,How often do you_？ 你多长时间,Eg. 1. how many classes do you have in a day? 你一天有多少节课呢？ 2. how often do you go to library（图书馆）？ 你多长时间去一次图书馆,How many minutes do you walk in a
