現在形：否定文 (A1)

I, you, we, they のときは、don't ＋ 動詞の原形 を使います。

否定文：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.". 否定するときは、単に「no」とするのではなく動詞の前に don't を置きます。
• やってみよう: I ___ coffee. (don't like / doesn't like / no like) 答え: don't like — 主語が I のとき否定文は don't を使います（doesn't は he/she/it のときだけです）。したがって、I don't like coffee となります。

否定文：doesn't

he, she, it のときは、doesn't ＋ 動詞の原形 を使います（-s が doesn't に移動します）。

• He doesn't work here.
• She doesn't like coffee.
• Not "She doesn't likes coffee." — say "She doesn't like coffee.". doesn't にすでに -s が含まれているので、メインの動詞は原形に戻ります。
• やってみよう: She ___ French. (doesn't speak / doesn't speaks / don't speak) 答え: doesn't speak — doesn't にすでに -s がついているので、動詞は原形のまま doesn't speak になります（speaks ではありません）。