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1、Unit4 Then and now(B Lets try&talk )Review words:1.go cycling2.play badminton3.ice-skate4.dining hall5.grass.6.gym7.didnt/couldnt8.表示過去的時(shí)間短語表示過去的時(shí)間短語.Review sentences:There is/are.There was/were+主語主語+表示時(shí)間的過去短表示時(shí)間的過去短語。語。1.十年前這里有一個(gè)圖書館。2.去年這里有一些體育館。3.上個(gè)月這里沒有飯廳。Teaching aim:1.學(xué)生能理解對(duì)話大意，正確朗讀課文。2.掌握核心句型：

2、Before,I/He/She/was.。Now I/She/He am/is.3.會(huì)在情景中正確使用I/She/He did/didnt.before。Lets try.Lets talk:Can you think of some words about appearance（外貌），character（性格）and colors?appearance:short,tall,fat,thin,long hair,short hair,strong.character:quiet,active,kind,funny.colours:yellow,green,black,white,pinkd

3、ifferent 不同的不同的Lets talk:1.Now please watch the cartoon then read this dialogue and answer the follwing question.Question：How did Mike change?Answer:Before he liked pink,but now he doesnt like pink.Before,he was quiet,now hes very active in class.Before,I/She/He was.Now I/She/He am/is.1.以前我很矮，現(xiàn)在我很高。

4、（short,tall）2.以前她很活潑，現(xiàn)在她很安靜。（active,quiet.3.以前他很強(qiáng)壯，現(xiàn)在他很瘦。(strong,thin)Before,I/She/He liked.I/She/He didnt like.play badmintongo cyclingice-skateExercises:按要求填寫單詞。1.old (反義詞)2.fun (形容詞）3.quiet（對(duì)應(yīng)詞）4.couldt（完全形式）dont（完全形式）photos（同義詞）newfunnyactivecould notdo notpictures二，按要求改寫句型二，按要求改寫句型 1.I liked pi

5、nk before.（改為否定句）I didnt like pink before.2.I could ride my bike well.（改為否定句I couldt ride my bike well3.I go cycling every day.（用yesterday 代替 every day 改寫句子）I went cycling yesterday.4.I was quiet before.（改為否定句）I was not quiet before.Summary:Before,I was quiet.Now I am very active in class.Before用于過去時(shí)態(tài)中，Now 用于一般現(xiàn)在時(shí)態(tài)。am/is 的過去式是was.另改為否定句時(shí)直接在was后面加not.(補(bǔ)充）：Before I liked pink.該句句中沒有be動(dòng)詞，時(shí)態(tài)是過去時(shí)態(tài)，所以改為否定句時(shí)在主語后面加didnt/did not.Talk about your friends or family members.How did they change?wasnt tall/.had long hair/.hairdidnt wear glasses/.didnt like maths/.didnt like cars/.didnt like eggs/.