八年级英语下册Unit4SectionB2a-2c同步课件

Unit4TheWondersofNature

Whatisamazingaboutnature?SectionB2a-2d通过匹配、朗读等方式，掌握below、common、risky、survive、deep等词汇及反义词的对应关系，感知how+形容词/副词

特殊疑问句的用法，准确认读并理解词义。（学习理解）01通过造句、短文填空等练习，内化located、survive、deep等词汇的用法，能正确使用howlong/high/deep等结构提问，并能在语篇中运用目标词汇完成填空。（应用实践）02通过讨论和拓展练习，理解目标词汇在描述自然、环境等主题语境中的表意功能，能够主动用所学词汇描述一处自然景观，并分享自己对探索自然的看法，认同保护自然的理念。（迁移创新）03学习目标WhatdoyouknowaboutLakeBaikal?LeadinWouldyouliketojoinouradventureteamtoexploreit?Beforetheadventure,let’slearnsomeoppositewords.TaklimakanDesert塔克拉玛干沙漠SaharaDesert撒哈拉大沙漠largesmallMountQomolangma珠穆朗玛峰MountTai泰山highlongTheNile尼罗河TheYellowRiver黄河lowshortMountEverest(high)vstheDeadSea(low).Thenorthernslopevsthesouthernslope.LivinganimalsvstheDeadSea"Innature,weseemanyopposites"

Canyougiveanyexamples?"ThesummitofMountEverest(top)vstheMarianaTrench(bottom).2aMatchthewordsontheleftwiththeiroppositesontheright.1.belowA.safe2.commonB.bottom3.lowC.southern4.deadD.above5.topE.unusual6.northernF.living7.riskyG.high8.surviveH.dieCanyougivemoreexamples?"Beforetheadventure,let’slearnsomeabout“How”.SaharaDesert撒哈拉大沙漠MountQomolangma珠穆朗玛峰TheNile尼罗河HowlargeistheSaharaDesert?

HowhighistheMountQomolangma?

HowlongistheNileRiver?

It’sabout9,320,000squarekilometres.

It’sabout8,848.86metreshigh.

It’sabout6,670kilometreslong.

Thinkandshare1.Howfarisitfromyourhometoschool?2.Howheavyisabluewhale?3.Howlargeisourcountry?4.Howoftendoyouexercise?It’sabout2kilometersfrommyhometoschool.Abluewhaleweighsabout150tons.Ourcountryisabout9.6millionsquarekilometersinsize.Iexercisethreeorfourtimesaweek.Whatdothesequestionsaskabout?DistanceWeightSizeFrequencyCanyoufindthesentencepattern?Sentencepattern:How+adj./adv....?1.

Itis______towaitforthetrafficlighttoturnred,butitis______towalkacrosstheroadwithoutlooking.saferisky2.Seeingacatinthestreetisvery_________,butseeingawildtigerthereis_________.commonunusual3.Thekiteis________theclouds,andthebridgeis_______theriver.abovebelow4.Withoutsunlightandwater,plantscannot________,theywill______.survivedie5.

The_____ofthemountainiscoveredwithsnow,whilethe________isfullofgreentrees.topbottom6.Thisareahasa_________climate,butits________partismuchwarmer.northernsouthern7.

Thetemperatureisvery______inwinter,butitbecomes______insummer.highlow8.The______leavesfalltotheground,and_________plantskeepgrowinginspring.deadlivingHowfarisitfromyourhometoschool?Howheavyisabluewhale?Howlargeisyourcountry?Howoftendoyouexercise?long

high

deep

old

fast

soon1.2.3.4.5.6.HowlongistheYangtzeRiver?HowhighistheMountKilimanjaro?HowdeepistheMarianaTrench?HowoldistheGreatWall?Howfastcanyourun?Howsooncanyoufinishthetask?Readtheexamplesandmakemoresentencesusinghowandthewordsinthebox.2bWhatDoYouKnowAboutLakeBaikal?Whereisit?Howdeepisit?Howlargeisit?Whatanimalslivethere?|deep|environment|survive|wonderful|surface|dive|LocatedinSiberia,Russia,LakeBaikalisoneoftheworld'smostfamouslakes.Itisthe______(1)freshwaterlakeintheworld.Toreachthebottom,youmust______(2)1,620metres!Itisalsolargerthanmostotherlakes.Its______(3)covers31,500squarekilometres.ThatisbiggerthanthecountryofBelgium!LakeBaikalisverycoldformostoftheyear.Butover1,200differenttypesofanimalscanstill______(4)inthis______(5).Today,thelakestillattractsmanycurioustravellers.Afterall,itisagreatnatural______(6)!adj.deepestn.v.adj.n.v.v.diven.surfacev.surviven.environmentn.wonderadj.2cCompletethepassagewiththecorrectformsofthewordsinthebox.2cCompletethepassagewiththecorrectformsofthewordsinthebox.deepsurvivewonderfulsurfacediveLocatedinSiberia,Russia,LakeBaikalisoneoftheworld’smostfamouslakes.Itisthe__________freshwaterlakeintheworld.Toreachthebottom,youmust__________1,620metres!Itisalsolargerthanmostotherlakes.Its__________covers31,500squarekilometres.ThatisbiggerthanthecountryofBelgium!LakeBaikaliscoldmostoftheyear.Butover1,200differenttypesofanimalscanstill__________inthisenvironment.Today,thelakestillattractsmanycurioustravellers.Afterall,itisagreatnatural__________!deepestdrivesurfacesurvivewonderCirclethenewwordsinthetext.Readthetextandmatchthenewwordswiththeirmeanings.asimilargroupofthingsorpeoplebeinaplacewaterthatisnotsaltyfromnature,notmadebypeoplemakesomeoneinterestedinsomethingwantingtoknowsomethingmoresomeonewhotravelsfromplacetoplacelocatefreshwatertypeattractcurioustravellernaturalNewwordsMeaning/ləʊˈkeɪt//ˈfreʃwɔːtə(r)//taɪp//əˈtrækt//ˈkjʊəriəs//ˈtrævələ(r)//ˈnætʃ(ə)rəl/Readandanswer1.

WhereisLakeBaikallocated?2.

WhatkindoflakeisLakeBaikal?ItislocatedinSiberia,Russia.3.

HowdeepisLakeBaikal?4.

HowlargeisLakeBaikal?5.

WhatdidthetextcompareLakeBaikalwith?Why?6.

WhydomanytravelersvisitLakeBaikal?Itisthedeepestfreshwaterlakeintheworld.Itisabout1,642metersdeep.Itisabout31,500squarekilometresinsize./ItislargerthanBelgium.ItcomparedLakeBaikalwithBelgium.BecauseitwantstoshowhowlargeLakeBaikalis.Becauseitisagreatnaturalwonderanditattractsmanytravelers.LocatedinSiberia,Russia,LakeBaikalisoneoftheworld’smostfamouslakes.Itisthedeepestfreshwaterlakeintheworld.Toreachthebottom,youmustdive1,620metres!Itisalsolargerthanmostotherlakes.Itssurfacecovers31,500squarekilometres.ThatisbiggerthanthecountryofBelgium!LakeBaikaliscoldmostoftheyear.Butover1,200differenttypesofanimalscanstillsurviveinthisenvironment.Today,thelakestillattractsmanycurioustravellers.Afterall,itisagreatnaturalwonder!belocatedin…位于…；坐落在…世界上最著名的湖泊之一淡水湖到达底部cover…squarekilometres覆盖…平方公里比利时这个国家一年中的大部分时间不同种类的动物在这种环境中吸引许多好奇的旅行者一处伟大的自然奇观一、请将下列单词进行正确的归类,从每类单词中选择一个单词造句。northeastern

waterfall

desert

deep

cliff

low

coral

ambitioncoast

western

south

high

long

curious

north

reef1.物体特征:______________________造句:___________________________________________deep，low，high，longThe

lake

in

our

town

is

about

50

metres

deep.2.方向:________________________________造句:__________________________________________________________________________northeastern，western，south，north

We

plan

to

travel

to

the

western

part

of

the

country

during

the

summer

holiday.3.人物品质:_________________造句:__________________________________________________________________ambition，curious

The

curious

boy

always

asks

his

teacher

a

lot

of

questions

about

nature.4.自然景观:______________________________________造句:_____________________________________________________________________waterfall，desert，cliff，coral，coast，reef

We

saw

a

beautiful

waterfall

when

we

climbed

the

mountain

yesterday.二、用方框中所给单词的适当形式填空,使短文意思完整、通顺。bottom

survive

south

top

north

die

Once

upon

a

time,a

small

tree

grew

at

the

5._______

of

a

hill.

It

was

thin

and

short,but

it

always

looked

up

at

the

6.____,dreaming

of

standing

there

to

see

the

faraway

fields.

The

7._________

side

of

the

hill

was

cold,and

in

winter,heavy

snow

fell

and

strong

winds

blew.

One

especially

freezing

winter,the

tree’s

leaves

all

fell

off,and

it

almost

8._____.But

its

roots

stayed

deep

in

the

soil,holding

on

tightly.bottomtopnortherndied

When

spring

came,warm

winds

from

the

9._________

plains（平原）

blew,and

gentle

rains

fell.

The

tree

slowly

came

back

to

life,growing

a

little

taller

each

year.

After

five

years,it

finally

reached

the

top.

It

had

managed

to

10.________

all

the

hard

times,and

now

it

could

see

rivers,villages,and

green

hills

far

away.

The

little

tree

smiled,happy

that

its

dream

had

come

true.#1.2southernsurvive从方框中选出下列句子中黑体单词的词义。

belowA.（prep.）在（或到）……下面

B.（prep.）少于；低于

C.（adv.）在（或到）下面1.Children

below

ten

can

enter

the

park

for

free.(

)2.Look!There

are

some

colourful

fish

swimming

below.(

)3.From

the

top

of

the

mountain，we

could

see

a

lake

below

us.(

)BCA

levelA.（n.）水平

B.（n.）高度

C.（adj.）平的；平坦的4.We

can

measure

the

level

of

the

water

in

the

cup

with

a

ruler.(

)5.We

need

to

practise

more

to

reach

the

same

level

as

our

classmates.(

)6.Remember

to

put

up

the

tent

on

level

ground

near

the

lake.(

)BAC

degreeA.（n.）度数

B.（n.）程度

C.（n.）学位7.He

found

a

good

job

in

the

city

after

getting

a

business

degree.(

)8.It

is

very

hot

today.

I

guess

that

it

is

30

degrees.(

)9.She

loves

reading

to

such

a

degree

that

she

forgets

to

eat.(

)CAB

wonder的用法知识链接：讲解详见背记本P27考点11.My

sister_________（想知道）

when

you

can

help

her

with

her

English.2.He

stayed

at

the

foot

of

the

mountain

for

three

months.

He

loved

the

__________（wonder）

scenery.wonderswonderful3.Mike

wondered

how

many

streets

there

were

in

Chongqing.（改为同义句）Mike

_______

___

______

how

many

streets

there

were

in

Chongqing.wantedtoknow4.我希望更多的外国游客来中国旅游，发现中国的文化瑰宝和自然奇观。I

hope

more

foreign

tourists

will

go

on

trips

to

discover

China’s

cultural

treasures

and

_______

_________.naturalwonders

die，dead与death辨析知识链接：讲解详见背记本P27考点25.Sam

always

feels

sad

when

he

thinks

of

his

grandpa’s______.6.When

more

and

more

people

speak

Putonghua，some

dialects（方言）

are______.7.Too

bad!

There

is

something

wrong

with

my

new

computer

and

it

is

_____now.8.Peter

Smith’s

good

friend_____in

the

countryside

three

years

ago.deathdyingdeaddied

risk的用法知识链接：讲解详见背记本P27考点39.It

is______（risk）

to

tell

your

personal

information

to

others

online.10.You

will

risk_______（lose）

the

football

match

if

you

don’t

practise

hard.11.The

small

village

by

the

sea

is___risk

when

there’s

a

strong

storm.12.They

risked

their

lives_________（climb）

the

mountain

last

month.riskylosingatto

climb13.人们在生活中需要冒险，但重要的是要知道如何保持安全。People

need

to

____________________

in

life，but

it’s

important

to

know

how

to

stay

safe.take

risks/take

a

risk

常见的“长/宽/高/深”等的表达知识链接：讲解详见背记本P28考点414.—