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高中英语Unit 5 The power of nature教学设计
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这是一份高中英语Unit 5 The power of nature教学设计，共9页。教案主要包含了原句再现，观察探究，归纳总结，即景活用，知识链接，词汇辨析等内容，欢迎下载使用。
教学内容分析
The teaching materials f this perid cntain tw parts.The first part is the reading passage n Page 39 with the title f The Lake f Heaven，which describes sme f the turist attractins in Changbaishan in Jilin Prvince.The secnd part is the Writing Task n Page 74.Ask students t imagine they were caught in a terrible natural disaster，but they are nw safe.Ask the students t write a diary describing hw they felt during and after the disaster.
三维目标设计
Knwledge and skills
1．T enable the students t knw smething abut sme f the turist attractins in Changbaishan in Jilin Prvince.
2．T get the students t learn the fllwing useful new wrds and expressins：precius，uncnscius，sht，panic，glance thrugh，anxius，guarantee，vary
3．T help the students learn hw t write a diary expressing feelings.
4．T fster the students' ability in skimming and lking up infrmatin in reference bks and imprve the students' reading ability.
Prcess and methds
Reading fr specific infrmatin，summarizing，discussing and practicing.
Emtin，attitude and value
1．T intrduce the students t the natural disasters.
2．T develp the students' sense f prtecting the envirnment arund them.
教学重、难点
1．The understanding f the reading passage.
2．The fllwing key sentences：
(1)The height f the land varies frm 700 metres abve sea level t ver 2000 metres and is hme t a great diversity f rare plants and animals.
(2)Amng the rare animals are cranes，black bears，lepards and tigers.
(3)It takes abut an hur t climb frm the end f the rad t the tp f the muntain.
(4)It is said that this by，wh had a great gift fr languages and persuasin，is the father f the Manchu peple.
3．Teaching the students hw t write a diary expressing feelings.
eq \(\s\up7(),\s\d5(教学过程))
Step 1 Revisin
Check the answers t the grammar exercises n Page 37 and explain the difficult nes.
Step 2 Lead－in
Ask students t imagine their visits t sme great places and talk abut their feelings.Yu may begin like this “Suppse yu have paid a visit t a great place，please tell us yur experience and hw yu felt.”
Step 3 Pre－reading
Give the students the fllwing tw questins fr them t think abut and answer.
1．D yu knw any great places?
2．Have yu ever been t any great places befre？If s，describe yur visit.
Step 4 Fast reading
G thrugh the text quickly and judge whether the fllwing statements are true(T)r false(F)．
( )1.Changbaishan is the secnd largest nature reserve in China.
( )2.The peak f Changbaishan can reach as high as 2000 metres.
( )3.Yu can see black bears，lepards and cranes in Changbaishan.
( )4.Tianchi is a lake in the crater f an extinct vlcan.
( )5.The father f the Manchu peple was believed t be gd at languages and persuasin.
Suggested answers：
1．F 2.T 3.T 4.T 5.T
Step 5 Detailed reading
Read the passage mre carefully and match Clumn A and Clumn B.
Suggested answers：
Para 1：B；Para 2：A；Para 3：C；Para 4：D
Step 6 Discussin
Enjy the fllwing pictures and discuss：Which f the five places wuld yu like t visit？Why?
Step 7 Language study
Shw the students the fllwing language pints in a slide shw.
Ⅰ.简单知识扫描
1．precius(P37)
【原句再现】
Buying the precius necklace，she had n mney left.
买了贵重的项链之后，她的钱一点都没有剩下。
【观察探究】
(1)He has sent me mst precius gifts.
他送给我极为珍贵的礼物。
(2)Time is precius.时间很宝贵。
(3)His children are very precius t him.
他极疼爱自己的孩子。
(4)Precius few peple can affrd the price like that.
没有什么人出得起那个价钱。
【归纳总结】
precius adj.贵重的，宝贵的；(与t 连用)可爱的，宝贝的 adv.很，非常，十足地
【即景活用】
There are plenty f jbs ______ in the western part f the cuntry.
A．present B．available C．precius D．cnvenient
Suggested answer：B
2．uncnscius(P37)
【原句再现】
Hearing a scream，I rushed dwnstairs nly t see my hstess lying uncnscius n the flr，surrunded by her guests.
听到一声尖叫，我冲下楼，结果看到女主人躺在地上被客人们围绕着，已失去了知觉。
【观察探究】
(1)He was kncked uncnscius.
他被打昏了。
(2)They fund him lying uncnscius n the flr.
他们发现他昏倒在地板上。
(3)The bk is full f uncnscius humr.
那本书妙趣横生。
(4)She is uncnscius f the effect she has n peple.
她没有觉察到自己对大众的影响。
【归纳总结】
uncnscius adj. 失去知觉的；不知道的；未察觉的；无意地做出或说出的
knck sb.uncnscius 把某人打得不省人事
be uncnscius f 对……没察觉/不知道
【知识链接】
uncnsciusness n．无意识；无知觉
uncnsciusly adv.无意识地；无知觉地
cnscius adj.有意识的；神志清醒的
【即景活用】
Are yu ______ the dangers t yur psitin?
A．sensible B．aware n [来源:学§科§网Z§X§X§K]
C．cnscius f D．understanding
Suggested answer：C
3．sht(P37)
【原句再现】
She was sht.她被射中了。
【观察探究】
(1)They sht the lck ff.
他们开枪把锁打掉。
(2)A man was sht in the leg.
一个人被射中腿部。
(3)This is just a ty gun—it desn't sht real bullets.
这只是一支玩具枪——不能射真子弹。
(4)He shuld have sht instead f passing.
他本该射门，不该传球。
【归纳总结】
sht v．射击；射中；射伤；发射；射门；投篮
【知识链接】
sht n．射击；枪炮声
shter n. 射手；射击武器
shting star 流星
4．panic(P38)
【原句再现】
I felt very nervus and had t frce myself nt t panic.
我感到非常紧张，不得不强迫自己不要惊慌。
【观察探究】
(1)“Dn't panic，”she tld herself.
她对自己说：“不要慌”。
(2)The idea might panic the investrs.
这个想法可能会使投资者惶恐不安。
(3)Everyne was in a panic when the fire started.
起火时大家都很惊慌。
(4)She gt int a panic when she saw the tiger.
看到那只老虎时，她陷入恐慌。
【归纳总结】
panic v．& n. 惊慌；恐慌
be in/get int a panic 陷入恐慌
【即景活用】
In the spring f last year，when a serius disease spread all ver the cuntry，peple ______ a panic.
A．came int B．were at
C．gt int D．were int
Suggested answer：C
5．glance thrugh(P39)
【原句再现】
Glance_thrugh these questins.
匆匆看一遍这些问题。
【观察探究】
(1)I glanced thrugh/ver the magazine.
我匆匆看了一遍杂志。
(2)Can yu tell at a glance what it is?
你能一眼看出那是什么吗？
【归纳总结】
glance thrugh/ver匆匆看一遍
at a glance一眼；一瞥
【词汇辨析】
glance，glimpse和gaze的区别：
glance 匆匆的一瞥，强调动作；
glimpse 指glance中所看到的，强调结果；
gaze 盯着看，凝视。
【即景活用】
She ______ shyly at the yung fellw frm behind her fan.
A．glanced B．glimpsed
C．gazed D．cpied
Suggested answer：A
Ⅱ.重点知识探究
1．anxius(P38)
【原句再现】
I was s anxius and culdn't mve at first.
我非常害怕，刚开始一段时间不能移动。
【观察探究】
(1)We were terribly anxius abut/fr the children when the Wenchuan earthquake ccurred.
汶川地震时，我们非常担心孩子们。
(2)The sldiers were t anxius t save the masses caring nthing abut their wn safety.
这些战士们非常急切地抢救群众，丝毫没有顾及个人的安危。
(3)I culd see that she was anxius fr Laura t g.
我看得出她巴望劳拉去。
(4)We were anxius that there be n misunderstanding.
我们极愿没有误解。
【归纳总结】
be anxius abut/fr 担心/忧虑
be anxius t d sth.急于做某事
be anxius fr sb.t d sth.急于让某人做某事
be anxius that急切希望……(that从句常用虚拟语气，即shuld＋d，其中shuld可以省略)
【知识链接】
eager和anxius的异与同。
eager的意思是“热切的，渴望的”，其基本用法和anxius 差不多，两者都可与abut/fr连用，意为“渴望得到……”；亦都可与动词不定式连用，意为“热切希望做……”。但是两者的意义不同。eager 强调“对成功的期望”或“进取的热情”，含有积极向上的意思；anxius强调“担心”或“焦虑”，即对结果感到不安。
【即景活用】
用 anxius/eager 填空：
(1)She is ______t knw the grade f her test.
(2)She is ______abut her weight.
(3)She was ______that the wedding the fllwing day shuld be a success.
Suggested answers：(1)eager/anxius (2)anxius 3.anxius
2．guarantee(P39)
【原句再现】
...，dn't frget t drp a cin int the clear blue water t guarantee yur lve will be as deep and lasting as the lake itself.
……不要忘了向清澈、湛蓝的湖水中投入一枚硬币，来保证你们的爱情像湖水一样幽深而长久。
【观察探究】
(1)We can't guarantee the punctual arrival f the trains in fggy weather.
我们不能保证火车在雾天准点到达。
(2)I guaranteed that I wuld pay ff his debts.
我保证我将还清他的债务。
(3)We guarantee t deliver within a week.
我们保证一周内送到。
(4)The plicy guarantees us against all lss.
这种保险保障我们免受任何损失。
【归纳总结】
guarantee vt.保证；担保
guarantee sb./sth.against/frm保障某人/某物免受损失或伤害等
【知识链接】
guarantee n．保证，保证书。例如：
Yu have my guarantee that I'll finish the jb n time.
我向你保证按时完成工作。
The watch cmes with a year's guarantee.
这表保修一年。
Wealth is nt a guarantee f happiness.
财富并不是幸福的保证。
【即景活用】
Wrking hard is nt nly a ______f great success，but it is amng the essential requirements.
A．sign B．signal
C．guarantee D．suppsitin
Suggested answer：C
3．vary (P39)
【原句再现】
The height f the land varies_frm 700 metres abve sea level t ver 2000 metres and is hme t a great diversity f rare plants and animals.
这里地面的高度由海拔700米到2000米不等，是多种多样稀有动植物的生长地。
【观察探究】
(1)That srt f thing can vary frm very imprtant t nt imprtant at all.
那种事可以非常重要，也可以一点都不重要。
(2)The price f the vegetables varies with seasns.
蔬菜的价格随季节变化。
(3)Huses vary in size.
种种房子大小不一。
【归纳总结】
vary 从……到……不等
vary with 随……而变化
vary in 在某方面不同
【词汇辨析】
change，alter和vary的异与同。
它们都含有“改变”的意思，区别在于：
(1)change 指“使改变得与原物完全不同”或“使发生以新代旧的变化”，如：
The appearance f the twn is quite changed.
这个城镇的外观变化颇大。
(2)alter 指“局部的、外表的变化，但特点不变”，如：
This cat shuld be altered.这件外套应该改改。
(3)vary 指“不规则或连续地改变”，如：
That srt f thing varies frm persn t persn.
那种事因人而异。
He never varied his habits.
他从未改变过自己的习惯。
【即景活用】
选用由vary构成的恰当的短语填空：
(1)The menu ______ ______ the seasns.
(2)The weather ______ ______very cld ______quite mild.
(3)The students' wrk ______ cnsiderably ______quality.
Suggested answers：(1)varies with (2)varied frm；t (3)varies；in
Step 8 Writing
Ask the students t write a diary describing his/her feelings during and after a disaster.While the students are writing，tell them they can：
1．Use the infrmatin n Page 74.
2．Set Steps 1 and 2 t wrk n individually.
3．Cmpare Step 3 with a partner.The aim f this step is t prepare them fr writing their diary.Their partners' questins will help them t clarify the stry and make sure it is understandable.
4．Use shrt and lng sentences and the －ing frm t create tensin in their stries.
5．End their diary with a summary f that they are all lucky.
One pssible versin：
Kate and I had been walking in the muntains when we nticed sme dark cluds cming dwn the muntain.We decided t turn arund and g hme.
As we walked the cluds gt nearer and nearer and the day grew darker.Then all f a sudden it began t rain.It was sn raining s hard that we culdn't see very far in frnt f us.Hlding each ther's hands s as nt t get separated，we cntinued dwn the muntain.But the rain gt heavier and heavier.Walking became harder and harder.We began t get very tired and very frightened.
Suddenly，we fund a shelter behind a big rck.Hugging each ther fr warmth，we stayed like that until the strm was ver.Luckily it nly lasted an hur r tw.Then the sun came ut again and we culd see ur huse in the distance.We were s relieved that we bth burst int tears.
Step 9 Hmewrk
1．Master the language pints in the text.
2．Finish the writing task.
Step 10 Reflectin after teaching
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
eq \(\s\up7(),\s\d5(教学参考))
Muntain Changbaishan
Changbaishan means eternally white muntains.It is China's largest nature reserve and is hme t the rare Manchurian tigers，snw lepards and wild ginseng.As a drmant vlcan，Changbai Muntain basts rare animals，marvelus lakes，amazing ht springs，and frests that stretch t the hrizn.There is splendid scenery during the fur seasns，but it is especially beautiful in winter.
Cvering a ttal area f 2000 square km，Changbai Muntain Nature Reserve is，as a mammth natural z and btanical garden，part f the UNESCO'S Man and Bisphere Prgram.
During the peak seasns，namely June thrugh September，hundreds f flwers blssm n the Suthern and Western slpes.It is very cl in Changbai Muntain，s it's an ideal place fr escaping frm the summer heat.But it is als very rainy in July and August，and visitrs cannt watch the Lake f Heaven clearly at that time.
Changbaishan is a vlcan lying between China and Nrth Krea.It is abut 2800 meters high.Lcated in the cunties f Antu，Wusng and Changbai in suthern Jilin Prvince，Changbaishan is ne f China's nature preservatin znes，cvering an area f ver 200 000 hectares，extending 78.5 kilmeters nrth t suth，and 53.3 kilmeters west t east.It has a whlesme natural envirnment and ecsystem with wrld－famus precius animals like Nrtheast tigers and sables.It's China's typical cmprehensive nature existence f wrld imprtance.
The Crater Lake：It nestles n Baitushan(The White－Head Muntain)，the main peak f Changbaishan and is als a brder lake between China and Krea.Surrunded by 16 extic peaks，the lake is the crater f a vlcan，filled with blue waters，knwn as Tianchi—the Lake f Heaven.The basin－shaped lake,2155 meters abve sea level，and 313 meters deep at maximum，encmpasses an area f 9.2 square kilmeters.It's a typical high muntain lake.The lake waters keep flwing ut，withut causing apparent change in its water level.The tw white rivers f the upper reaches f the secnd Snghua River riginate here.The inner side f the lake bank is craggy cliffs frmed by rugh－surface rcks and white pumice stnes，which make the lake resemble a marble bwl carved with uncanny wrkmanship.The surface f the lake is smth as a mirrr，with the reflectins f grtesque cliffs upn it in numerus extic shapes.
The Waterfall f Changbaishan：The water f Tianchi finds its way ut thrugh an pening in the nrthern bank and at a vertical cliff,1250 meters away，drps 68 meters dwn with lud rumbles.The Changbai Waterfall hangs in the air like a white ribbn.
The Ht Springs f Changbaishan：At the nrth side f the White－Head Muntain，there is a grup f ht springs cvering an area f ver ne thusand square meters.Tw white rivers wind their ways amng the ht springs.The right banks where the muths f springs cncentrate are shruded in ht misty air all the year rund.The springs vary in temperature，with the highest reaching 82 degrees Celsius.The ht waters have high medical value.
Clumn A
Clumn B
Para.1
Para.2
Para.3
Para.4[来源:学&科&网]
A.give sme infrmatin abut Tianchi and hw visitrs get t it
B．Changbaishan is a gd place t visit
C．present an interesting myth abut Tianchi
D．let the Lake f Heaven guarantee yur lve will be as deep and lasting as the lake itself
教学内容分析
The teaching materials f this perid cntain tw parts.The first part is the reading passage n Page 39 with the title f The Lake f Heaven，which describes sme f the turist attractins in Changbaishan in Jilin Prvince.The secnd part is the Writing Task n Page 74.Ask students t imagine they were caught in a terrible natural disaster，but they are nw safe.Ask the students t write a diary describing hw they felt during and after the disaster.
三维目标设计
Knwledge and skills
1．T enable the students t knw smething abut sme f the turist attractins in Changbaishan in Jilin Prvince.
2．T get the students t learn the fllwing useful new wrds and expressins：precius，uncnscius，sht，panic，glance thrugh，anxius，guarantee，vary
3．T help the students learn hw t write a diary expressing feelings.
4．T fster the students' ability in skimming and lking up infrmatin in reference bks and imprve the students' reading ability.
Prcess and methds
Reading fr specific infrmatin，summarizing，discussing and practicing.
Emtin，attitude and value
1．T intrduce the students t the natural disasters.
2．T develp the students' sense f prtecting the envirnment arund them.
教学重、难点
1．The understanding f the reading passage.
2．The fllwing key sentences：
(1)The height f the land varies frm 700 metres abve sea level t ver 2000 metres and is hme t a great diversity f rare plants and animals.
(2)Amng the rare animals are cranes，black bears，lepards and tigers.
(3)It takes abut an hur t climb frm the end f the rad t the tp f the muntain.
(4)It is said that this by，wh had a great gift fr languages and persuasin，is the father f the Manchu peple.
3．Teaching the students hw t write a diary expressing feelings.
eq \(\s\up7(),\s\d5(教学过程))
Step 1 Revisin
Check the answers t the grammar exercises n Page 37 and explain the difficult nes.
Step 2 Lead－in
Ask students t imagine their visits t sme great places and talk abut their feelings.Yu may begin like this “Suppse yu have paid a visit t a great place，please tell us yur experience and hw yu felt.”
Step 3 Pre－reading
Give the students the fllwing tw questins fr them t think abut and answer.
1．D yu knw any great places?
2．Have yu ever been t any great places befre？If s，describe yur visit.
Step 4 Fast reading
G thrugh the text quickly and judge whether the fllwing statements are true(T)r false(F)．
( )1.Changbaishan is the secnd largest nature reserve in China.
( )2.The peak f Changbaishan can reach as high as 2000 metres.
( )3.Yu can see black bears，lepards and cranes in Changbaishan.
( )4.Tianchi is a lake in the crater f an extinct vlcan.
( )5.The father f the Manchu peple was believed t be gd at languages and persuasin.
Suggested answers：
1．F 2.T 3.T 4.T 5.T
Step 5 Detailed reading
Read the passage mre carefully and match Clumn A and Clumn B.
Suggested answers：
Para 1：B；Para 2：A；Para 3：C；Para 4：D
Step 6 Discussin
Enjy the fllwing pictures and discuss：Which f the five places wuld yu like t visit？Why?
Step 7 Language study
Shw the students the fllwing language pints in a slide shw.
Ⅰ.简单知识扫描
1．precius(P37)
【原句再现】
Buying the precius necklace，she had n mney left.
买了贵重的项链之后，她的钱一点都没有剩下。
【观察探究】
(1)He has sent me mst precius gifts.
他送给我极为珍贵的礼物。
(2)Time is precius.时间很宝贵。
(3)His children are very precius t him.
他极疼爱自己的孩子。
(4)Precius few peple can affrd the price like that.
没有什么人出得起那个价钱。
【归纳总结】
precius adj.贵重的，宝贵的；(与t 连用)可爱的，宝贝的 adv.很，非常，十足地
【即景活用】
There are plenty f jbs ______ in the western part f the cuntry.
A．present B．available C．precius D．cnvenient
Suggested answer：B
2．uncnscius(P37)
【原句再现】
Hearing a scream，I rushed dwnstairs nly t see my hstess lying uncnscius n the flr，surrunded by her guests.
听到一声尖叫，我冲下楼，结果看到女主人躺在地上被客人们围绕着，已失去了知觉。
【观察探究】
(1)He was kncked uncnscius.
他被打昏了。
(2)They fund him lying uncnscius n the flr.
他们发现他昏倒在地板上。
(3)The bk is full f uncnscius humr.
那本书妙趣横生。
(4)She is uncnscius f the effect she has n peple.
她没有觉察到自己对大众的影响。
【归纳总结】
uncnscius adj. 失去知觉的；不知道的；未察觉的；无意地做出或说出的
knck sb.uncnscius 把某人打得不省人事
be uncnscius f 对……没察觉/不知道
【知识链接】
uncnsciusness n．无意识；无知觉
uncnsciusly adv.无意识地；无知觉地
cnscius adj.有意识的；神志清醒的
【即景活用】
Are yu ______ the dangers t yur psitin?
A．sensible B．aware n [来源:学§科§网Z§X§X§K]
C．cnscius f D．understanding
Suggested answer：C
3．sht(P37)
【原句再现】
She was sht.她被射中了。
【观察探究】
(1)They sht the lck ff.
他们开枪把锁打掉。
(2)A man was sht in the leg.
一个人被射中腿部。
(3)This is just a ty gun—it desn't sht real bullets.
这只是一支玩具枪——不能射真子弹。
(4)He shuld have sht instead f passing.
他本该射门，不该传球。
【归纳总结】
sht v．射击；射中；射伤；发射；射门；投篮
【知识链接】
sht n．射击；枪炮声
shter n. 射手；射击武器
shting star 流星
4．panic(P38)
【原句再现】
I felt very nervus and had t frce myself nt t panic.
我感到非常紧张，不得不强迫自己不要惊慌。
【观察探究】
(1)“Dn't panic，”she tld herself.
她对自己说：“不要慌”。
(2)The idea might panic the investrs.
这个想法可能会使投资者惶恐不安。
(3)Everyne was in a panic when the fire started.
起火时大家都很惊慌。
(4)She gt int a panic when she saw the tiger.
看到那只老虎时，她陷入恐慌。
【归纳总结】
panic v．& n. 惊慌；恐慌
be in/get int a panic 陷入恐慌
【即景活用】
In the spring f last year，when a serius disease spread all ver the cuntry，peple ______ a panic.
A．came int B．were at
C．gt int D．were int
Suggested answer：C
5．glance thrugh(P39)
【原句再现】
Glance_thrugh these questins.
匆匆看一遍这些问题。
【观察探究】
(1)I glanced thrugh/ver the magazine.
我匆匆看了一遍杂志。
(2)Can yu tell at a glance what it is?
你能一眼看出那是什么吗？
【归纳总结】
glance thrugh/ver匆匆看一遍
at a glance一眼；一瞥
【词汇辨析】
glance，glimpse和gaze的区别：
glance 匆匆的一瞥，强调动作；
glimpse 指glance中所看到的，强调结果；
gaze 盯着看，凝视。
【即景活用】
She ______ shyly at the yung fellw frm behind her fan.
A．glanced B．glimpsed
C．gazed D．cpied
Suggested answer：A
Ⅱ.重点知识探究
1．anxius(P38)
【原句再现】
I was s anxius and culdn't mve at first.
我非常害怕，刚开始一段时间不能移动。
【观察探究】
(1)We were terribly anxius abut/fr the children when the Wenchuan earthquake ccurred.
汶川地震时，我们非常担心孩子们。
(2)The sldiers were t anxius t save the masses caring nthing abut their wn safety.
这些战士们非常急切地抢救群众，丝毫没有顾及个人的安危。
(3)I culd see that she was anxius fr Laura t g.
我看得出她巴望劳拉去。
(4)We were anxius that there be n misunderstanding.
我们极愿没有误解。
【归纳总结】
be anxius abut/fr 担心/忧虑
be anxius t d sth.急于做某事
be anxius fr sb.t d sth.急于让某人做某事
be anxius that急切希望……(that从句常用虚拟语气，即shuld＋d，其中shuld可以省略)
【知识链接】
eager和anxius的异与同。
eager的意思是“热切的，渴望的”，其基本用法和anxius 差不多，两者都可与abut/fr连用，意为“渴望得到……”；亦都可与动词不定式连用，意为“热切希望做……”。但是两者的意义不同。eager 强调“对成功的期望”或“进取的热情”，含有积极向上的意思；anxius强调“担心”或“焦虑”，即对结果感到不安。
【即景活用】
用 anxius/eager 填空：
(1)She is ______t knw the grade f her test.
(2)She is ______abut her weight.
(3)She was ______that the wedding the fllwing day shuld be a success.
Suggested answers：(1)eager/anxius (2)anxius 3.anxius
2．guarantee(P39)
【原句再现】
...，dn't frget t drp a cin int the clear blue water t guarantee yur lve will be as deep and lasting as the lake itself.
……不要忘了向清澈、湛蓝的湖水中投入一枚硬币，来保证你们的爱情像湖水一样幽深而长久。
【观察探究】
(1)We can't guarantee the punctual arrival f the trains in fggy weather.
我们不能保证火车在雾天准点到达。
(2)I guaranteed that I wuld pay ff his debts.
我保证我将还清他的债务。
(3)We guarantee t deliver within a week.
我们保证一周内送到。
(4)The plicy guarantees us against all lss.
这种保险保障我们免受任何损失。
【归纳总结】
guarantee vt.保证；担保
guarantee sb./sth.against/frm保障某人/某物免受损失或伤害等
【知识链接】
guarantee n．保证，保证书。例如：
Yu have my guarantee that I'll finish the jb n time.
我向你保证按时完成工作。
The watch cmes with a year's guarantee.
这表保修一年。
Wealth is nt a guarantee f happiness.
财富并不是幸福的保证。
【即景活用】
Wrking hard is nt nly a ______f great success，but it is amng the essential requirements.
A．sign B．signal
C．guarantee D．suppsitin
Suggested answer：C
3．vary (P39)
【原句再现】
The height f the land varies_frm 700 metres abve sea level t ver 2000 metres and is hme t a great diversity f rare plants and animals.
这里地面的高度由海拔700米到2000米不等，是多种多样稀有动植物的生长地。
【观察探究】
(1)That srt f thing can vary frm very imprtant t nt imprtant at all.
那种事可以非常重要，也可以一点都不重要。
(2)The price f the vegetables varies with seasns.
蔬菜的价格随季节变化。
(3)Huses vary in size.
种种房子大小不一。
【归纳总结】
vary 从……到……不等
vary with 随……而变化
vary in 在某方面不同
【词汇辨析】
change，alter和vary的异与同。
它们都含有“改变”的意思，区别在于：
(1)change 指“使改变得与原物完全不同”或“使发生以新代旧的变化”，如：
The appearance f the twn is quite changed.
这个城镇的外观变化颇大。
(2)alter 指“局部的、外表的变化，但特点不变”，如：
This cat shuld be altered.这件外套应该改改。
(3)vary 指“不规则或连续地改变”，如：
That srt f thing varies frm persn t persn.
那种事因人而异。
He never varied his habits.
他从未改变过自己的习惯。
【即景活用】
选用由vary构成的恰当的短语填空：
(1)The menu ______ ______ the seasns.
(2)The weather ______ ______very cld ______quite mild.
(3)The students' wrk ______ cnsiderably ______quality.
Suggested answers：(1)varies with (2)varied frm；t (3)varies；in
Step 8 Writing
Ask the students t write a diary describing his/her feelings during and after a disaster.While the students are writing，tell them they can：
1．Use the infrmatin n Page 74.
2．Set Steps 1 and 2 t wrk n individually.
3．Cmpare Step 3 with a partner.The aim f this step is t prepare them fr writing their diary.Their partners' questins will help them t clarify the stry and make sure it is understandable.
4．Use shrt and lng sentences and the －ing frm t create tensin in their stries.
5．End their diary with a summary f that they are all lucky.
One pssible versin：
Kate and I had been walking in the muntains when we nticed sme dark cluds cming dwn the muntain.We decided t turn arund and g hme.
As we walked the cluds gt nearer and nearer and the day grew darker.Then all f a sudden it began t rain.It was sn raining s hard that we culdn't see very far in frnt f us.Hlding each ther's hands s as nt t get separated，we cntinued dwn the muntain.But the rain gt heavier and heavier.Walking became harder and harder.We began t get very tired and very frightened.
Suddenly，we fund a shelter behind a big rck.Hugging each ther fr warmth，we stayed like that until the strm was ver.Luckily it nly lasted an hur r tw.Then the sun came ut again and we culd see ur huse in the distance.We were s relieved that we bth burst int tears.
Step 9 Hmewrk
1．Master the language pints in the text.
2．Finish the writing task.
Step 10 Reflectin after teaching
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
eq \(\s\up7(),\s\d5(教学参考))
Muntain Changbaishan
Changbaishan means eternally white muntains.It is China's largest nature reserve and is hme t the rare Manchurian tigers，snw lepards and wild ginseng.As a drmant vlcan，Changbai Muntain basts rare animals，marvelus lakes，amazing ht springs，and frests that stretch t the hrizn.There is splendid scenery during the fur seasns，but it is especially beautiful in winter.
Cvering a ttal area f 2000 square km，Changbai Muntain Nature Reserve is，as a mammth natural z and btanical garden，part f the UNESCO'S Man and Bisphere Prgram.
During the peak seasns，namely June thrugh September，hundreds f flwers blssm n the Suthern and Western slpes.It is very cl in Changbai Muntain，s it's an ideal place fr escaping frm the summer heat.But it is als very rainy in July and August，and visitrs cannt watch the Lake f Heaven clearly at that time.
Changbaishan is a vlcan lying between China and Nrth Krea.It is abut 2800 meters high.Lcated in the cunties f Antu，Wusng and Changbai in suthern Jilin Prvince，Changbaishan is ne f China's nature preservatin znes，cvering an area f ver 200 000 hectares，extending 78.5 kilmeters nrth t suth，and 53.3 kilmeters west t east.It has a whlesme natural envirnment and ecsystem with wrld－famus precius animals like Nrtheast tigers and sables.It's China's typical cmprehensive nature existence f wrld imprtance.
The Crater Lake：It nestles n Baitushan(The White－Head Muntain)，the main peak f Changbaishan and is als a brder lake between China and Krea.Surrunded by 16 extic peaks，the lake is the crater f a vlcan，filled with blue waters，knwn as Tianchi—the Lake f Heaven.The basin－shaped lake,2155 meters abve sea level，and 313 meters deep at maximum，encmpasses an area f 9.2 square kilmeters.It's a typical high muntain lake.The lake waters keep flwing ut，withut causing apparent change in its water level.The tw white rivers f the upper reaches f the secnd Snghua River riginate here.The inner side f the lake bank is craggy cliffs frmed by rugh－surface rcks and white pumice stnes，which make the lake resemble a marble bwl carved with uncanny wrkmanship.The surface f the lake is smth as a mirrr，with the reflectins f grtesque cliffs upn it in numerus extic shapes.
The Waterfall f Changbaishan：The water f Tianchi finds its way ut thrugh an pening in the nrthern bank and at a vertical cliff,1250 meters away，drps 68 meters dwn with lud rumbles.The Changbai Waterfall hangs in the air like a white ribbn.
The Ht Springs f Changbaishan：At the nrth side f the White－Head Muntain，there is a grup f ht springs cvering an area f ver ne thusand square meters.Tw white rivers wind their ways amng the ht springs.The right banks where the muths f springs cncentrate are shruded in ht misty air all the year rund.The springs vary in temperature，with the highest reaching 82 degrees Celsius.The ht waters have high medical value.
Clumn A
Clumn B
Para.1
Para.2
Para.3
Para.4[来源:学&科&网]
A.give sme infrmatin abut Tianchi and hw visitrs get t it
B．Changbaishan is a gd place t visit
C．present an interesting myth abut Tianchi
D．let the Lake f Heaven guarantee yur lve will be as deep and lasting as the lake itself
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