Jim can run faster than Tom.
吉姆能比汤姆跑得快
Lily does better in basketball than Lucy.
莉莉比露西擅长篮球
Harry is writing more carefully than Peter.
哈利正在比皮特更认真地写字

He ran faster than his brother . ( faster 是副词，原形是 fast )
He does his homework more carefully than Jim . ( carefully 是副词）
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she dances better than helen does.
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i weigh lighter than she does.
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