be動詞の過去形 be動詞の過去形は２つある 現在刑 過去形 am / is was are were be動詞の過去形の否定文 be動詞の過去形was/were にnotをつけるだけ。 wasn't / weren't be動詞の過去形の疑問文 Were Miwa and Yuka busy with their work No, they weren't …