1、 Unit 13We are trying to save the earth. We are try to save the earth.Present progressiveThe river used to be so clean.used to The air is badly polluted.Passive voiceNo scientific studies have shown that sharks fins are good for health.Present perferctWe should save the sharks.Model verbsGrammar Foc

2、usJoe: _you ever _ (take) part in an environmental project?Ken: Yes, I have. I _ (help) with a Clean-Up Day last year. It was_(consider) the biggest clean-up project this city ever _(have). Fill in the blanks with the correct forms of the verbs in brackets.4a4aHave taken helpedconsideredhad hadJoe:

3、How many people _ (take) part?Ken: I _ (think) more than 1,000 people _(come) to help out.Joe: Thats fantastic! I guess everyone in this city is _ (try) to improve the environment.Ken: Yes, we cant affort to _ (wait) any longer to take action!tookthinkcametryingwait Fill in the blanks with the appro

4、priate modal verbs from the box. People _ think that big things _ be done. However, many forget that saving the earth begins with small things. For example, you _ save electricity by turning off the lights when you leave a room. You _ also use paper or reusable bags instead of plastic bags. 4b4bcan

5、could would have to should must may/mightmayshouldcouldwould Make a list fo thingsthat people can do to help the environment and discuss your list with your partner.4 4c cA: I think that everyone should use public transportation.B: I disagree. its diffcult for parents with young children to use publ

6、ic transportation.use public transportation. Discussing.4 4c cuse public transportationtake your own shopping bags when go shoppingreduce the use of air conditioners in summerturn off the lights when you leave the roomgrow more plants.A: I think that everyone should take your own shopping bags when

7、go shopping.B: I agree. its good for the environment. A: I think that everyone should reduce the use of air conditioners in summer.B: I disagree. the summer is so hot, especially in sourth China. Without air-conditioners, people may not have the patience to work.A: I think that everyone should turn

8、off the lights when you leave the room.B: I agree. its good to save energy resources.A: I think that everyone should use public transportation.B: I disagree. its diffcult for parents with young children to use public transportation.A: I think that everyone should grow more plants.B: I agree. growing

9、 more plants will provide us more fresh air and make our plant more beautiful. 現在進行時現在進行時（1）含義：表示正在發生或進行的動作。）含義：表示正在發生或進行的動作。（2）基本結構：）基本結構：主語主語 + be + 現在分詞（現在分詞（be 的形式隨主語的變化的形式隨主語的變化而變化）而變化）（3）基本用法：）基本用法：表示現在正在進行的動作。特征：常常與表示現在正在進行的動作。特征：常常與now或具或具體的時間連用，有時句中會有感官動詞來提示，或通過體的時間連用，有時句中會有感官動詞來提示，或通過上下文來暗

10、示。上下文來暗示。表示現階段一直進行的動作。這類動詞常常是延續表示現階段一直進行的動作。這類動詞常常是延續性動詞。常于性動詞。常于at present, this week, these days等連用。等連用。表示主語的特征、性格、能力等表示主語的特征、性格、能力等本單元復習現在進行時、本單元復習現在進行時、used to句型、被動語態、句型、被動語態、現在完成時和情態動詞。現在完成時和情態動詞。現在完成時現在完成時（1）含義：表示過去發生的動作對現在還有影）含義：表示過去發生的動作對現在還有影響。響。（2）基本結構：）基本結構：主語主語 + have / has + 過去分詞過去分詞（3）

11、基本用法：）基本用法：表示過去發生的動作，但強調對現在產生影響。表示過去發生的動作，但強調對現在產生影響。特征：不能與表示具體的時間狀語連用。特征：不能與表示具體的時間狀語連用。表示過去發生的動作或存在的狀態一直延續到表示過去發生的動作或存在的狀態一直延續到現在，還可能繼續下去。常常與現在，還可能繼續下去。常常與since, for, in the past + 時間名詞，時間名詞，in the last +時間名詞等時間狀時間名詞等時間狀語連用，而且謂語動詞要求是延續性動詞。語連用，而且謂語動詞要求是延續性動詞。表示一種表示一種“經歷或體驗經歷或體驗”，即可以表示經歷過，即可以表示經歷過也可

12、以是從來都沒有經歷過。也可以是從來都沒有經歷過。被動語態被動語態初中階段我們學習了七種被動結構，歸納如下：初中階段我們學習了七種被動結構，歸納如下：（1）一般現在時是被動語態：）一般現在時是被動語態：am / is / are + 過去分詞過去分詞（2）現在完成時的被動式：）現在完成時的被動式： have / has + been + 過去分詞過去分詞（3）現在進行時的被動式：）現在進行時的被動式：am/ is/ are + being + 過去分詞過去分詞（4）一般過去時的被動式：）一般過去時的被動式：was / were + 過去分詞過去分詞（5）過去進行時的被動式：）過去進行時的被動式：

13、was / were + being + 過去分詞過去分詞（6）過去完成時的被動式：）過去完成時的被動式：had + been + 過去分詞過去分詞（7）一般將來時的被動式：）一般將來時的被動式：will / be going to be+ 過去分詞過去分詞（8）含有情態動詞的被動式：）含有情態動詞的被動式：情態動詞情態動詞+be +動詞的過去分詞。動詞的過去分詞。情態動詞情態動詞情態動詞表示說話人對某一動作或狀態的態度，如認為情態動詞表示說話人對某一動作或狀態的態度，如認為“可能可能”、“應當應當”、“必要必要”等。情態動詞本身有一等。情態動詞本身有一定的意義，但不能單獨作謂語，也沒有人稱和

14、數的變化。定的意義，但不能單獨作謂語，也沒有人稱和數的變化。后面一般跟動詞原形。后面一般跟動詞原形。used to 結構結構used to意為意為“過去常常做某事過去常常做某事”，指的是過去的習慣性，指的是過去的習慣性動作，目的在于與現在形成對照。動作，目的在于與現在形成對照。used to是個情態動詞，是個情態動詞，其中的其中的to是不定式符號，后面跟動詞原形。在美式英語是不定式符號，后面跟動詞原形。在美式英語中。它的疑問式是：中。它的疑問式是：Did 主語主語use to do sth？否定？否定式是：主語式是：主語didnt use。在英式英語中，它的疑問。在英式英語中，它的疑問式應當是

15、：式應當是：Used 主語主語to sth？否定式應當是？否定式應當是used not to或或use（d）nt to。He used to stay up late. 他過去常熬到很晚。他過去常熬到很晚。used to 結構結構used to意為意為“過去常常做某事過去常常做某事”，指的是過去，指的是過去的習慣性動作，目的在于與現在形成對照。的習慣性動作，目的在于與現在形成對照。used to是個情態動詞，其中的是個情態動詞，其中的to是不定式符號，是不定式符號，后面跟動詞原形。后面跟動詞原形。在美式英語中在美式英語中：它的疑問式是：它的疑問式是：Did 主語主語use to do sth否

16、定式是：主語否定式是：主語didnt use在英式英語中在英式英語中： 它的疑問式應當是：它的疑問式應當是：Used 主語主語to sth否定式應當是否定式應當是used not to.I. 用所給詞的適當形式填空。用所給詞的適當形式填空。1. The old man used _ (be) a teacher. 2. We should _ (clean) the room every day. 3. Look! Tom _ (sleep) in his room. 4. Lots of trees _ (plant) on the hill every year. 5. He _ (liv

17、e) here for 20 years. to be clean is sleeping are planted has lived用括號里所給動詞的正確形式填空用括號里所給動詞的正確形式填空1. The girl _(dance) in the classroom.2. Its 5 oclock now. Mike _ (have)dinner.3. -_ you ever _ (be) to the US? - Yes, twice.4. - May I speak to John? - Sorry, he _(go) to New York. he will be back in tw

18、o days.5. -Did you go to Jacks birthday? - No,I _(not invite).5. -Do you know Mr.White well? - Yes. He _(work) for the WWF for two years.6. I _ (live) here since 1990.7. - Do you often clean your classroom? - Yes. Our classroom _(clean) every day.9.- Whats this? -Its a CD. This CD _(use) for learnin

19、g English.10. Anew highway in my hometown _ (bulid) next month. has worked have lived is cleaned is used will be built情態動詞練習情態動詞練習1.- _ you pass me a pen? Id like to write down the phone number. - Sure. Here it is. A.Can B.Need C.Might D.Must2. - May I go to the cinema, Mum? - Certainly, but you _ b

20、e back by 11 oclock. A.can B.may C.must D. need3. you _ worry about me. Its nothing serious. A.cant B.mustnt C. neednt D. wont4. - Excause me. Is this the right way to the Summer Palace? - Sorry, Im not sure. but it _ be. A.mught B.mustnt C.cant D.must5. The man in the office _ be Mr.Black, because

21、he went home just now. A.musnt B.may not C.cant D.needntuse to 練習練習A 她過去常常周末和朋友閑逛。她過去常常周末和朋友閑逛。She _ with friends on weekds.B 他習慣于每晚睡得很晚。他習慣于每晚睡得很晚。 He _ at night.C. Ken used to be afraid of dogs.(改為一般疑改為一般疑問句問句)_?is used to hang outis used to sleeping late/ staying upDid Ken used to be afraid od do

22、gs1. He promised to pick me up at the school gate. However, he _ yet. A. didnt arrive B. doesnt arrive C. isnt arriving D. hasnt arrived2. Ba Jin, one of the greatest writers in China, _ as “Peoples Writer”. A. is regarded B. has regarded C. is regarding D. regardsChoose the best answer.3. Where is

23、Tom? He _ in his room. A. is readingB. readsC. readD. was reading 4. May I go out now, Dad? No. You _ let your mother know first. A. can B. may C. need D. must5. Her son _ Coke, but now he _ milk.A. used to drink ; is used to drinking B. used to drinking ; drinksC. is used to drinking ; used to drin

24、k D. is used to drink ; is drinking1. (2013江蘇淮安江蘇淮安) Its getting dark. Please _ the light. A. turn on B. turn off C. turn down D. turn around2. (2013湖北隨州湖北隨州)How does Jack usually go to work?He _ drive a car, but now he _ there to lose weight.A. used to; is used to walk B. was used to; is used to walkingC. was used to; is used to walk D. used to; is used to walking感悟中考感悟中考3. (20