2020-2021学年Unit 2 Saving the earth.Topic 2 All these problems are very serious.获奖教案

这是一份2020-2021学年Unit 2 Saving the earth.Topic 2 All these problems are very serious.获奖教案，共8页。

I.Teaching aims and demands:
1. Learn the usages f indefinite prnuns and adverbs.
2. Knw smething abut pllutin further and enhance the awareness f envirnment prtectin.
II. Imprtant pints:
1. as a result, behavir, in the beginning, day by day, die ut
2. (1)As a result, air pllutin has becme a serius prblem.
(2)Humans have cme t realize the imprtance f prtecting animals.
3. the indefinite prnun and adverb:
(1) Nne f us likes pllutin.
(2) Dn’t spit anywhere in public.
(3) Everyne shuld care fr wild animals and plant mre trees.
III. Teaching prcedure:
Step 1 Review
1. (1) Shw sme animals’ pictures, fr example, a panda’s. Enhance students’ awareness f envirnment. Master “die ut”. Understand “imprtance”.
(2) Listen t 3. Finish A f 3.
(3) Ask students t understand the five sentences in B f 3. Listen t 3 again, and finish B f 3. Then check the answers.
2. Shw the picture f 1a. Ask and answer between the teacher and students. Ask students t review the kinds f pllutin and their harm. Lead t1a. Learn and master “as a result”.
Step 2 Presentatin
1. Listen t 1a. Help students summarize what shuld /shuldn’t d as students and enhance students’ awareness f prtecting the envirnment.
2. Let students read 1a and underline the imprtant and difficult sentences. Encurage students t discuss and slve them by themselves. Then the teacher writes them dwn n the Bb and explains them.
3. Let students read 1a again, find the sentences with indefinite prnuns and adverbs and then discuss the usages f them. Then the teacher and students summarize the usage tgether.
Step 3 Cnslidatin
1. Listen t 1a again. Let students fllw it and imiate the prnunciatin and intnatin.
2. Read 1a in rles and then act it ut.
3. Read 1a and finish 1b alne t get a further understanding fthe dialg.
4. Retell 1a accrding t 1b.(ptinal) Finish 1a.
Step 4 Practice
1. Let students finish 2 by themselves, then check the answers. Learn and master the new wrd and phrases “behavir”, “in the beginning” and “day by day”. Understand “rude”.
2. Create a real scene. The teacher and students wrk tgether t discuss the bad behavirs in the schl. Encurage students t keep away frm these behavirs.
Step 5 Prject/wrk after class
1. Free wrk.
2. D sme exersice in TOPENGLISH.
Handwriting：
Sectin B
I.Teaching aims and demands:
Talk abut the imprtance f frests and water resurces. Enhance students’ awareness f envirnmental prtectin.
II. Imprtant pints:
1. sme new wrds and phrases:
2. sme useful sentences:
(1) Trees can stp the wind frm blwing the earth away.
(2) Pass laws against water pllutin.
(3) Remember t turn the tap ff when yu leave.
III. Teaching prcedure:
Step 1 Review
1. Shw different pictures abut pllutin. Ask and answer in pairs, talking abut different kinds and the harm f pllutin.
2. Play a shrt vide abut sandstrms. Lead t this sectin. Learn and master “sand”. Knw abut “sandstrm”.
Step 2 Presentatin
1. Shw a picture with the scene f peple with gauze masks in a sandstrm. Lead t 1c.
2. Listen t 1a and answer the shining questin, then check the answer.
Hw can trees afect the weather?
3. Let students read 1a carefully, and underline the new wrds and imprtant sentences at the same time. Write them dwn n the Bb and then help students understand them. Learn and master the new wrds and phrase “prevent”, “prevent…frm” and “althugh”. Understand “humman being”. Fr example:
(1) That’s bad, but hw can that affect the weather?
(2) Trees can stp the wind frm blwing the earth away.
(3) They can als prevent the water frm washing the earth away.
Step 3 Cnslidatin
1. Read 1a with the tape. Remind students t play attentin, speed, intnatin and pause.
2. Read 1a in grups. Let students wrk in grups f three and read it in rles. Then the teacher selects several grups t act it ut. Finish 1a.
3. Read 1a again and finish 1b.
4. Talk in pairs abut what causes the sandstrm and the imprtantce f frests accrding t the questins and picture in 1b. Then tell them t the class.
Step 4 Practice
1. Let students read 2. Learn and master the new wrd and phrase “law” and “turn ff”. Understand “tap”. Find ut the imprtant and difficult sentences. Then the teacher writes them dwn n the Bb and helps students understand them.
2. Discuss in grups: What kind f ways d yu have t save water besides the ways in 2? Make a list f ways f saving water. Then chse several grups t reprt their results. Finish 2.
Step 5 Prject/wrk after class
1. Free wrk.
2. D sme exersice in TOPENGLISH.
Handwriting：
Sectin C
I.Teaching aims and demands:
1. Learn mre abut the harm caused by different kinds f pllutin and reasns f these kinds pllutin.
2. Get infrmatin by using simple reading strategies accrding t different reading purpses.
II. Imprtant pints:
1. n earth, perid, millins f, take away, rise, level, refer t
2. Sme useful sentences:
(1) When it rains r when the wind blws, the earth is taken away.
(2) The heat frm the sun can’t escape s the temperature is rising.
(3) Frests have becme deserts, s mre and mre srts f animals and plants are disappearing.
(4) As a result, many rivers and lakes are nw dead.
(5) T much harmful radiatin frm the sun passes thrugh the hle and reaches the earth directly.
(6) It causes the level f the ceans t rise and the climate f the earth t change.
III. Teaching prcedure:
Step 1 Review
1. Lk at the pictures in 1a. Discuss in grups abut what pllutin human activities bring and what prblems the pllutin causes. Then get several students t reprt the results f their discussin.
2. Let students think abut sme questins given by the teacher accrding t the pictures in 1a. let students learn and master “rise”, and knw abut “zne layer”, “carbn” and “carbn dixide”. Fr example:
(1) What is the zne layer?
(2) What des the zne layer f? Is it gd r bad fr us?
(3) What prblem will the rise f carbn dixide cause?
Step 2 Presentatin
1. Let students read 1a with these questins and answer them.
2. Read 1a again and chse a suuitable title fr each paragraph by using the reading skills we have. Check the answers. Master the new wrds and phrases “n earth” , “perid” , “millins f” , “ take away”, and “level”. Understand the wrds and phrase “pllute”, “xygen”, “radiatin”, “blanket”, “escape” and “the greenhuse effect”.
Step 3 Cnslidatin
1. Let students chse the best answers accrding t 1a, and finish 1b. Finally check the answerw. And let students master “refer t” and knw abut”Mars”.
2. Let students find ut the difficult pints in 1a and slve them with the teacher.
3. Read with the tape, Paying attentin t the prnunciatin, speed, intnatin and pause. Finish 1a.
Step 4 Practice
1. Divide the class int tw grups. Let each grup find ut the infuences f O3, CO2 and the greenhuse effect n the envirnment. Then let the tw grups cmpare what they’ve fund ut, and cmpletement each ther. Write dwn hw they affect the envirnment. The teacher ffers help if necessary. Finish 2.
2. Discuss: What shuld we d t prtect the earth?
Step 5 Prject/wrk after class
1. Free wrk.
2. D sme exersice in TOPENGLISH.
Handwriting：
Sectin D
I.Teaching aims and demands:
1. Summarize the usage f indefinite prnuns and adverbs.
2. Summarize the harm f rubbish pllutin, and let students realize the imprtance f prtecting the envirnment.
II. Imprtant pints:
1. sme useful sentences:
(1) This harms the envirnment …
(2) At the same time, dealing with …
(3) Of all the garbage, abut 35 percent can be recycled while the rest can’t.
(4) Hw shall we deal with it?
2. the indefinite prnun and adverb:
(1) Nne f us likes pllutin.
(2) Dn’t spit anywhere in public.
(3) Everyne shuld care fr wild animals and plant mre trees.
(4) We shuld d everything we can t prtect the envirnment.
III. Teaching prcedure:
Step 1 Review
1. Listen t 3 and read after the tape. Then let students read tgether. Asfter that, talk abut the functin f ttrees. Finish 3.
2. Talk abut the pllutin that the earth is surffering by playing sme parts f vides.
3. Shw sme pictures f garbage pllutin and intrduce them. Let students understand the wrd “garbage”.
Step 2 Presentatin
1. Let students listen t the tape f 1a and fill in the blanks. Check the answers. Master the phrase “take up”.
2. Let students read 1a by themselves. Answer the questins:
(1) Hw many tns f waste d peple prduce in Britain every year? What abut HK?
(2) Hw d peple deal with it?
(3) Hw des the garbage harm the envirnment?
Step 3 Cnslidatin
1. Read with the tape, paying attentin t the prnunciatin, speed, intnatin and pause.
2. Ask students t read 1a silently, and find ut sme key wrds and phrases t retell the text.
3. Have a discussin. Let students give sme suggestins n hw t deal with the rubbish prduced every day. Finish 1a.
4. Ask students t read and understand the sentences f 1b, underline the sentences in 1a which have the same meanings as thse in 1b. Zcheck the answers. Review the usage f the phrases “be harmful t” and “have difficulty ding” as well. Finish 1b.
Step 4 Practice
1. Let students summarize the imprtant sentences and phrases in 1a and 1b. Then review the useful expressins f this tpic.
2. Present sme exercise, and review the sentences f this tpic with the indefinite prnuns and adverbs. Summarize all the indefinite prnuns and adverbs and the uasge with students tgether.
3. Read 2a and 2b, then the teacher dictates sme sentences r phrases. Finish 2a and 2b.
Step 5 Prject/wrk after class
1. Free wrk.
2. D sme exersice in TOPENGLISH.
Handwriting：
All these prblems are very serius.
Sectin A
as a resultBut the gvernment is ding smething useful t prtect the envirnment.
smething usefulNne f us likes pllutin.
in the beginningDn’t spit anywhere in public.
day by dayEveryne shuld care fr wild animals and plant mre trees.
die utWe shuld d everything we can t prtect the envirnment.
All these prblems are very serius.
Sectin B
cut dwn
prevent … frm …=stp … frm …
change int desert
human beingTrees can stp the wind frm blwing the earth away.
althugh …/ … but …Pass laws against water pllutin.
turn ffRemember t turn the tap ff when yu leave.
All these prblems are very serius.
Sectin C
millins f …When it rains r when the wind blws, the earth is taken away.
take awayAs a result, many rivers and lakes are nw dead.
refer tThe heat frm the sun can’t escape s the temperature is rising.
It causes the level f the ceans t rise and the climate f the earth t change.
All these prblems are very serius.
Sectin D
take upThis harms the envirnment …
At the same time, dealing with…
不定代词/副词Of all the garbage, abut 35 percent can be recycled while the rest can’t.
Hw shall we deal with it?