1、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.Wh
2、at 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 yo
3、u 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(现在)Then（那时）There was no dining hall in the school There is a gym in the school now.There was
4、 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 mon
5、th facilities(设施设施)gym dining hall post office Caf（咖啡馆）（咖啡馆）Motel（汽车旅馆）（汽车旅馆）cinema traffic light（红绿灯）（红绿灯）street light（路灯）（路灯）traffics（交通）（交通）go by bike go by bus go by subway go by planeactivities(活动活动)watch TVuse the mobile（使用手机）（使用手机）use the Internet（使用网络）（使用网络）There are _s.People go by _.People
6、 can _.In todays world(当今世界)，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.（在那时）（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(
7、汽车旅馆汽车旅馆).At that time,there were no cafs（咖啡馆）（咖啡馆）.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
8、型句型现在时现在时There is+单数单数There are+复数复数过去时过去时There was+单数单数There were+复数复数 Tips:There是个近视眼，只能看到最近的，是个近视眼，只能看到最近的，最近的是单数用最近的是单数用is，是复数用，是复数用are；如果是表示过去的，单数用如果是表示过去的，单数用was，复数用，复数用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
9、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 talkTips:Were there any carports(车棚)in our school five years ago?Were there any racetracks(跑道)in our school five years ago?Homework1.听录音，跟读；抄单词，练习书写，美观工整。2.用英文向家人描述学校的今昔变化。3.完成同步相应练习。
