am/is - was 是 bite - bit 咬 fall - fell 跌倒 are - were 是 ring - rang 铃声响 drive - drove 驾驶 have/has - had 有 sing - sang 唱 keep - kept 保持 run - ran 跑 feel - felt 感觉 say - said 说 sleep - slept 睡觉 sit - sat 坐 sweep - swept 扫地 eat - ate 吃 speak - spoke 讲话 wake - woke 醒来 write - wrote 写 think - thought 想 buy - bought 买 win - won 赢 drink - drank 喝 bring - brought 带来 make - made 制作 swim - swam 游泳