1、Unit 3 School Life,Lesson 17 :School Science Fair,Lead in,A science fair,Objectives: 1.To find out different tenses we have learned in the dialogue. 2.To learn some key words and expressions.,New words and phrases:,1.prize praz n. 獎(jiǎng)品;獎(jiǎng)賞 I hope to win first prize. 2.video vd n.錄像; 視頻 I made a video a

2、bout silk worms. 3.visitor vzt n. 參觀者；游客 There are so many visitors in summer.,4.a piece of 一片/張 Please give me a piece of paper. 5.be interested in 對(duì)感興趣 Im really interested in English. 6.different kinds of 不同種類的 I will make 10 different kinds of donuts.,Listen and write true(T) or false(F). (1)Dan

3、ny and Jenny are excited about the science fair. (2)Jennys project is about silk. (3)Danny will make five different kinds of donuts. (4)Danny will teach people to make donuts.,T,F,F,F,Read the text in roles.,To find out different tenses we have learned in the dialogue.,現(xiàn)在進(jìn)行時(shí) Danny and Jenny are talk

4、ing about their school science fair. 一般過(guò)去時(shí) I worked really hard this year. I made a video about silk worm. 一般將來(lái)時(shí) You will do a great job! I will make ten different kinds of donuts.,Language points,1. piece有“片; 張; 塊; 條”等意思, a piece of, 一塊/張, 常用于表達(dá)不可數(shù)名詞的量: a piece of wood一塊木頭; a piece of news一條消息; a p

5、iece of meat一塊肉。,當(dāng)表達(dá)兩(張、塊、片、條等)或兩(張、塊、片、條等)以上時(shí), 應(yīng)在piece后面加“-s”。 例如: Can you give me two pieces of paper? 你能給我兩張紙嗎?,【學(xué)以致用】 Jack had _bread and a glass of milk for breakfast. A. two piece of B. two pieces C. two piece D. two pieces of,D,Xianthe Walled City,3.be interested in對(duì)感興趣 interested的用法 (1) be i

6、nterested in意為“對(duì)感興趣”，后跟名詞、代詞或動(dòng)詞-ing形式。 (2) interested作形容詞，常用于修飾人； interesting作形容詞，常用于修飾物,Xianthe Walled City,【學(xué)以致用】 Im _ in the _ movie. A. interested; interested B. interesting; interesting C. interesting; interested D. interested; interesting I am interested in _ (learn) English.,learning,D,Summary,(2) be interested in意為“對(duì)感興趣”，后跟名詞、代詞或動(dòng)詞-ing形式。 (3) interested作形容詞，常用于修飾人； interesting作形容詞，常用于修飾物 。,(1)a piece of, 一塊/張, 常用于表達(dá)不可數(shù)名