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用法口訣： “我(I)”用am , “你(you)”用are, is跟著“他(he)”、“她(she)”、“它(it)”, 一切復數(shù)（we,you,they）都用“are”。,用be（am , is, are）三種形式填空,1.I ___a student. 2.Sandy ___my classmate. 3.We ___in Grade 7. 4.They ___happy. 5.It __my bag. 從以上5個句子，你能發(fā)現(xiàn)什么？,變式例句: be 動詞一般現(xiàn)在時的肯定句:,1.I am a new student. 2.They are my teachers. 3.She is tall.,Guide Two 請同學們在5分鐘之內(nèi)對比以下幾個句子， 你能從中發(fā)現(xiàn)什么，比比誰總結的最快。 be 動詞一般現(xiàn)在時的否定句：,1.I am a new student. 2.I am not a new student. 3.They are my teachers. 4.They are not my teachers 5.She is tall. 6.She is not tall.,變式練習: be 動詞一般現(xiàn)在時的否定句: 4. I am __ a student. 5. You are __ good at swimming. 6. Simon is __ tall.,請同學們在3分鐘之內(nèi)對比以下幾個句子， 你能從中發(fā)現(xiàn)什么，比比誰總結的最快。 一般現(xiàn)在時be動詞的一般疑問句 及其肯定和否定回答,1. Am I the first? Yes, you are. No, you aren’t 2. Are you good at swimming? Yes, I am. / Yes, we are. No, I’m not. / No, we aren’t. 3. Is Simon tall? Yes, he is. No, he isn’t,變式練習,將下列句子變成 (1)一般疑問句并作肯定和否定回答; (2)變成否定句。 We are good friends.,,(1) Are you good friends? Yes, we are. / No, we aren’t. (2) We aren’t good friends.,Simon and Sandy are classmates.,(1) Are Simon and Sandy classmates? Yes, they are. / No, they aren’t. (2) Simon and Sandy aren’t classmates.,Her hair is long.,(1) Is her hair long? Yes, it is. / No, it isn’t. (2) Her hair isn’t long.,布置作業(yè):用be的適當形式填空,1. A:What ___(be) his name ? B:His name ___(be) Tom. 2. A:___(be)you Mike’s classmate? B:Yes,I ___(be). 3. A:What ___(be) your brother? B:He ___(be) a doctor. 4. A:___( be) they your new classmates? B:No,they___(be not) 5.A:___(be) this your e-dog ? B:No, it __(be not),