先复习，朗读以下的不规则动词的过去时：
am \ is ---- was 是       are ------- were是         do \ does---did做
go---- went 去          have \has--- had 有、吃    fly--- flew 飞
see---- saw 看见        read---read 阅读         ride ---- rode 骑 
take--- took 带去、乘   eat---- ate吃            sing---- sang唱歌
draw --- drew画        write --- wrote写        swim---swam 游泳 
come---came 来        make---made制作        feel---felt 感觉        
leave----left 离开       ride ---- rode 骑 
......
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