I don't drink coffee.(私はコーヒーを飲みません。)
She doesn't drink coffee.(彼女はコーヒーを飲みません。)
He didn't go to the library yesterday.
(彼は昨日図書館へ行かなかった。)
She didn't have breakfast this morning.
(彼女は今朝朝食をとらなかった。)
Do you play tennis?(あなたはテニスをしますか。)
Does she like music?(彼女は音楽が好きですか。)
Did she come to the party yesterday?
(彼女は昨日パーティーに来ましたか。)
Did you go shopping?(あなたは買い物に行きましたか。)
この疑問文や前のbe動詞の疑問文に対する答えは、Yes. または No. を使います。
Is she … ? → Yes, she is.
Was she … ? → No, she wasn't.
Do you … ? → Yes, I do.
Did you … ? → No, I didn't.