Tom runs faster than Jack.
再问： 大哥，你认不识字是不是哦，讲了要用副词的比较级啊！
再答： fast adv. 副词修饰动词 快地, 迅速地 He was running so fast that he couldn't stop himself. 他跑得太快了, 一下子停不下来。 我造的句子中fast是副词，也用了比较级，你想清楚了再说话~
再问： 再写2个，谢谢
再答： They work harder than you do. He didn't arrive earlier than she did. We went no farther than the bridge.
