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1、Unit 4 Then and now Introduce Words名詞,表示“收音機(jī)”常用短語：listen to the radio 聽收音機(jī) about radio 關(guān)于收音機(jī)eg： The students are listening to the radio in music class now. 同學(xué)們正在音樂課上聽收音機(jī)。小練習(xí)：你喜歡聽收音機(jī)嗎？ Do you like _ _ the _? listening to radioradio /red/ Words名詞,表示“電視機(jī)” ,完整形式為：television常用短語：watch TV 看電視 many TVs 許多電

2、視機(jī)eg ：We watch TV every evening. 我們每天晚上都看電視。小練習(xí)： （ ）People like watching _ every evening. A. TV B. film ATV /ti: vi:/ Expressions could 表示過去的能力。而can 不表示過去特定能力,通常只限于肯定句,否定句或疑問句。He could not write. 他不能寫。eg ：Could he speak English ? 那時(shí)候他會(huì)說英語嗎？小練習(xí) : （ ）They _dance in the park then . A. do B. could B Exp

3、ressionswrote 是write 的過去式,主語：Mr Brown 謂語：wrote 賓語：letters 賓語補(bǔ)足語：to his friends.Mr Brown wrote letters to his friends .Mr Brown 寫信給他的朋友們。eg : Mike wrote few letters to any of his family. Mick 沒怎么給家里寫信。小練習(xí) :Last year Yang Ling _(write) letters to her best friend . wrote Expressions情態(tài)動(dòng)詞can不能獨(dú)門存在,它必須與動(dòng)詞

4、原形一起構(gòu)成謂語。沒有人稱和數(shù)的變化。Now he can read and watch news on the Internet.現(xiàn)在他可以在網(wǎng)上看新聞。eg : I can speak Chinese. 我會(huì)講漢語。小練習(xí) :Amy 不會(huì)說英語。Amy _ speak English. 他會(huì)跳舞。 He _ dance.cantcan Dialogues Share the changes that take place around us over the years with your classmates! Expand 四大發(fā)明是指中國古代對(duì)世界具有很大影響的四種發(fā)明。即造紙術(shù)、指

5、南針、火藥、活字印刷術(shù)。 中國四大發(fā)明 造紙技術(shù)的發(fā)明,是中華民族對(duì)世界文明的杰出貢獻(xiàn)之一。 它的發(fā)明地點(diǎn)是洛陽。 指南針是用以判別方位的一種簡單儀器。前身是司南。常用于航海、大地測(cè)量、旅行及軍事等方面。 Expand用硝石、硫磺和木炭這三種物質(zhì)混和制成的,而當(dāng)時(shí)人們都把這三種東西作為治病的藥物,所以取名“火藥” ,意思是“著火的藥”。 中國四大發(fā)明活字印刷術(shù)開始于隋朝的雕版印刷,經(jīng)宋仁宗時(shí)的畢升發(fā)展、完善，產(chǎn)生了活字印刷,并由蒙古人傳至了歐洲,所以后人稱畢升為印刷術(shù)的始祖。 Summaryradio TVwrite-wrotecould/can/cant Exercise1. Seven y

6、ears ago, I _ write , but I _ read. A. can, cant B. could not , could C. could not, can 2. My father does _ on the Internet. A. shopping B. shops C. shoping BA Exercise3. I _ a letter to my uncle last night. A. write B. writed C. wrote 4. Helen _ this storybook two days ago. A. read B. reads C. readed CA Exercise5. I have e-friends from all _ the world. A. of B. over C. on6.Ten years ago, I _ the telephone to _ people. A. use , call B. used, called C. used, callBC HomeworkComplete story framework alone and recite the article !