一般现在时：否定句 (A1)

用 I, you, we, they 的时候，用 don't + 动词原形。

否定句：don't

• I don't like coffee.
• You don't work here.
• They don't speak French.
• Not "I no like coffee." — say "I don't like coffee.". 要表达否定，动词前用 don't，不能只用 'no'。
• 试一试: I ___ coffee. (don't like / doesn't like / no like) 答案: don't like — 用 I 的时候，否定式是 don't（doesn't 只用于 he/she/it）。所以是：I don't like coffee.

否定句：doesn't

用 he, she, it 的时候，用 doesn't + 动词原形（-s 转移到了 doesn't 上）。

• He doesn't work here.
• She doesn't like coffee.
• Not "She doesn't likes coffee." — say "She doesn't like coffee.". doesn't 已经带了 -s，后面的动词要变回原形。
• 试一试: She ___ French. (doesn't speak / doesn't speaks / don't speak) 答案: doesn't speak — doesn't 已经带了 -s，所以动词用原形：doesn't speak（不是 'speaks'）。