1、Unit13 Were trying to save the earth!Period 3 Section A (Grammar Focus-4c)A短語溫顧1. 在河床底部_ 2. 充滿了垃圾_3. 產(chǎn)生影響_ 4. 聽說 _5. 到目前為止_ 6. 對有害_7. 的數(shù)量_ 8.給帶來危險(xiǎn)_9. 不但而且_ 10. 砍掉；割掉_B短語知新1. 參加_ 2.代替 _ 3. 采取行動(dòng)_ 4. 關(guān)掉_ 5. 付費(fèi)_ 6. 累加 _7. 使用公共交通_ 8. 負(fù)擔(dān)不起做某事_ 【課前準(zhǔn)備】cant afford to do sth.the bottom of the riverbe harmful

2、tohear ofbe full of rubishthe numbers ofbring danger tonot only but alsocut offtake part ininstead oftake actionturn offpay foradd upuse public transportationso farhas an effect on 1). The shoes are so expensive that I cant _(買得起）them.2). We should use_ (可重復(fù)使用的）chopsticks when we eat outside.3). Wha

3、t do you think of the _ (交通）in China?4). The Spring Festival is _ (認(rèn)為是）the most important festival in China.5). We can save _ (電）by turning off the lights when we leave a room.自學(xué)自查：根據(jù)漢語提示完成單詞。affordreusabletransportationconsideredelectricityHave you ever take part in an environment project? How shou

4、ld you do to save the environment? turn off the lights when use the paper bags.walk to schoolWe can _.Leadin 4a.4a. Fill in blanks with the correct forms of verbs. Joe: _ you ever _ (take ) part in an environmental project? Ken: Yes, I have. I _ (help ) with a Clean-Up Day last year. It was _(consid

5、er) the biggest clean-up project this city _ ever _ (have). Joe : 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 afford to _ (wait) any longer t

6、o take action.HavetakenhelpedconsideredhadhadtookthinkcametryingwaitPeople _ think that big things _ be done to save the earth. 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 reusable bags in

7、stead of plastic bags. I think its a great idea that you now _pay for plastic bags in some stores, And instead of driving to school or work, you _ ride your bike or walk. If its far,you _ take the bus. All these small things _ add up and became big things that _ improve the environment. Lett take ac

8、tion now!4b.Fill in blanks with the proper modal verbs in the box.can would couldhave to should must May/mightmay/mighthave tomust should can couldshould can couldshould can couldhave tocan/ couldcan/ could would can coulduse public transportation2. take reusable bags when you go shopping3. turn off

9、 the lights when you leave the room4. grow more plants5. reduce the use of air conditions in summer . 4c. Make a list of things that people can do to help the environment and discuss. Groupwork.A: I think that everyone should use public transportationB: I disagree. Its difficult for parents with you

10、ng children to use public transportation.2.Wecantaffordtowaitanylongertotakeaction!我們不能再等了， 要采取行動(dòng)了。【解析】 1)afford是動(dòng)詞，意為買得起,擔(dān)負(fù)得起，通常與can,could,beable to連用,多用于否定句中。 Theycouldntafford$50foraticket.他們拿不出50美元買一張票。 2)afford后面常跟帶to的動(dòng)詞不式。Wecantaffordtogoabroadthis summer.今年夏天我們沒有足夠的錢出國【合作探究】Icantafford_himanexpensivebirthdaypresent. A.tobuy B.buying C.forbuying D.buy 根據(jù)漢語意思完成句子。5.我們必須采取行動(dòng)來阻止他們。Wemust _ tostopth