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sn’ t at school today. 4. A girl is over is Kate. 5. What is that ? It’ s an apple. 總之 be動(dòng)詞有三種變化 am is are 見(jiàn)到 I 用 am 。見(jiàn)到 you 用 are。 見(jiàn)到單數(shù)用 is。 見(jiàn)到復(fù)數(shù)要用 are. 練習(xí): 用 (is am are)填空 1\_ ______ these chairs? Yes, they _____. 2\ ________ you a new student? No, I ____ not. 3\ Li Tao ______ a boy and Ann _____a girl . 4\ There ______ three bedrooms in our house. 5\ How