Unit 4Then and nowA. Lets learnThere are many books in it. We can read books in it. What is it?Its a _ .libraryThere are teachers in it. They often work there. And you often hand in （上交）your homework there. What is it?Its a _.teachers officeTHERE ARE MANY COMPUTERS HERE. YOU CAN LEARN HOW TO USE COMPUTERS.WHAT IS IT? Its a _ .computer roomTHERE ARE TWO BLACKBOARDS. THERE ARE MANY DESKS AND CHAIRS IN IT. WHAT IS IT?Its a _.classroomWHAT CAN YOU SEE IN OUR CLASSROOM?THERE IS/AREFIVE YEARS AGO(五年前),THERE WAS NOnow5 years agoWhat differences can you find?FIVE YEARS AGO(五年前),THERE WAS NOcomputerTVfanWHAT CAN YOU SEE?dining hallgymgrassTHERE WAS NO 20 YEARS AGO.gymTHERE WAS NO 10 MONTHS AGO.dinning hallThere was no last year.grass THERE WERE NO LAST MONTH.trees go by bikeThere is a dining hall in the school now.Now(現(xiàn)在)Then（那時(shí)）There was no dining hall in the school There is a gym in the school now.There was no gym in the school There are some trees in the school now.There were no trees in the school Wu Yifans schoolThere is grass in the school now.There was no grass in the school 20 years ago.10 months ago.last year.last month.CAN YOU READ?dinning hall gym grass years ago months ago last year last month facilities (設(shè)施設(shè)施) gym dining hall post office Caf（咖啡館）（咖啡館） Motel（汽車旅館）（汽車旅館） cinema traffic light（紅綠燈）（紅綠燈） street light（路燈）（路燈） traffics（交通）（交通） go by bike go by bus go by subway go by planeactivities(活動(dòng)活動(dòng))watch TVuse the mobile（使用手機(jī)）（使用手機(jī)）use the Internet（使用網(wǎng)絡(luò)）（使用網(wǎng)絡(luò)）There are _s.People go by _.People can _.In todays world(當(dāng)今世界)，In the Tang dynasty(唐朝唐朝)At that time, there were no gyms. People didnt go by bus. People couldnt use the Internet.（在那時(shí)）（不能）At that time, there were no . dinning hallsAt that time, there were no post offices. At that time, there were no cinemas. At that time, there were no motels (汽車旅館汽車旅館). At that time, there were no cafs（咖啡館）（咖啡館）. At that time, there were no telephones. At that time, there were no traffic lights. At that time, there were no streetlights. At that time, people didnt .go by bikeAt that time, people couldnt . watch TVAt that time, people couldnt .use the mobile THERE BE 句型句型現(xiàn)在時(shí)現(xiàn)在時(shí)There is +單數(shù)單數(shù)There are+復(fù)數(shù)復(fù)數(shù)過(guò)去時(shí)過(guò)去時(shí)There was +單數(shù)單數(shù)There were+復(fù)數(shù)復(fù)數(shù) Tips:There是個(gè)近視眼，只能看到最近的，是個(gè)近視眼，只能看到最近的，最近的是單數(shù)用最近的是單數(shù)用is，是復(fù)數(shù)用，是復(fù)數(shù)用are；如果是表示過(guò)去的，單數(shù)用如果是表示過(guò)去的，單數(shù)用was，復(fù)數(shù)用，復(fù)數(shù)用were1、There _ an apple on the table. A. is B. was C. are2、There_ two apples in the basket. A. is B. was C. are3、There _ an apple, two pears and five watermelons on the table. A. is B. was C. areACA4、There _ no gyms in my school 2 years ago. A. was B. are C. were5、There _ no grass in my school last year. A. was B. are C. were6、There _ no gym, no dinning halls and no library in my school six months ago. A. was B. are C. wereCAADRAW AND TALK Tips: Were there any carports(車棚) in our school five years ago? Were there any racetracks(跑道) in our school five years ago?Homework1.聽(tīng)錄音，跟讀；抄單詞，練習(xí)書(shū)寫(xiě)，美觀工整。2.用英文向家人描述學(xué)校的今昔變化。3.完成同步相應(yīng)練習(xí)。