Unit7SectionB课件人教版八年级英语下册

人教版八年级英语下册课件Unit7What'sthehighestmountainintheworldSectionB第4课时（1a~1d）一、根据句意及汉语提示填写单词。1.You

should

eat

______（更少的）

meat

if

you

want

to

be

healthy．less2.The

box

_________（重）

three

kilos．weighs3.As

an

_______（成年人），

you

should

make

the

right

decision．adult4.—When

is

your

__________（生日）？—It’s

on

June

3rd.birthday5.There

are

a

few

birds

flying

above

the

____________（海洋）．ocean/sea二、按要求完成句子。（每空一词）1.Ababypandahasnoteethwhenitisborn.(改为同义句)Ababypandahasnoteeth______

_______．atbirthten2.它每天吃十公斤的食物。（完成译句）Iteats______

_____

_____

foodaday．kilosofto3.

3.一只大熊猫能够活到20到30岁。（完成译句）Apandacan_______________20to30yearsold．liveup4.大象比熊猫重好多倍。An

elephant

weighs

________

________

________

than

a

panda.manytimesmore5.我比你高4厘米。I’m

_________

_____________

________

than

you.4/fourcentimeterstaller三、阅读理解。()1.HowlongdoesthisspecialdaylastA.6hours.B.6.5hours.C.7hours.D.7.5hours.(

)2.Whichofthefollowingcanbeputintotheblank“”？A.SportsgamesB.DifferentshowsC.AsurprisepartyD.Aspeech(

)3.Matchtheopeninghourswiththeeventsandchoosetherightanswer.①9:40a.m.a.Enjoytheblack&whitefashionshow.②10:35a.m.b.Listentoatalkaboutpandas.③10:50a.m.c.Enjoythesongsandpoems.④11:50a.m.d.Takepartintheartcompetition.A.①—d;②—b;③—c;④—aB.①—b;②—d;③—a;④—cC.①—b;②—d;③—c;④—aD.①—d;②—b;③—a;④—cDBC第5课时（2a~2e）一、用括号中所给单词的适当形式填空。1.Of

the

two

girls,

I

find

Lucy

______________（clever）.the

cleverer2.John’s

parents

have

four

sons,

and

he

is

the

___________（young）

child.youngest3.The

old

woman

looks

much

__________（happy）

now.happier4.Winter

is

_____________（cold）

of

the

four

seasons.

But

I

like

it

_______（well）.the

coldestbest5.The

boy

is

not

so

____________（interesting）

as

his

brother.interesting6.The

food

is

___________________（delicious）

of

all.the

most

delicious7.The

Yellow

River

is

the

second

_________（long）

river

in

China.longest8.I

think

English

is

one

of

____________________（important）

subjects

in

middle

school.the

most

important二、单项填空。()1.—I’m______,Mom.CanIhavesomethingtoeat—OK.Hereissomebread.A.heavy B.full C.hungry D.thirstyC(

)2.They

offered

her

a

house

for

$100,000,______it

was

worth.A.as

much

as

twice

B.as

much

twice

as

C.as

twice

much

as

D.twice

as

much

asD()3.Doyouknowif______ameetingnextMondayA.therewasgoingtohave B.therewasgoingtobe C.istheregoingtobe D.therewillbeD(

)4.The

population

of

the

world

in

the

20th

century

became

much______than

that

in

the

19th

century.A.bigger

B.larger

C.greater

D.moreB(

)5.The

house

is

too

small

for

his

family______.A.to

live

in

B.living

in

C.live

in

D.lives

inA三、阅读理解。

A

new

study

finds

that

plants

communicate

with

one

another

to

warn

of

danger．

We

often

consider

plants

as

the

furniture（家具）

of

the

natural

world.

They

don’t

move;

they

don’t

make

sounds;

they

don’t

seem

to

act

on

anything.

In

fact，

plants

talk

to

each

other

all

the

time.

And

the

language

is

a

chemical（化学物质）．

Over

the

years，

scientists

have

reported

that

different

types

of

plants，

from

trees

to

tomatoes，

give

out（散发）

chemicals

into

the

air

to

help

neighboring

plants.

These

chemical

warnings

can

spread

information

about

one

plant’s

disease

or

infestation（虫害），

so

other

plants

can

protect

themselves.

But

how

plants

receive

and

act

on

the

information

exactly

is

still

mysterious（神秘的）．

In

this

week’s

Science

Magazine，

researchers

in

Japan

offered

some

explanations（解释）.

They

have

found

out

one

chemical

message

and

traced

it

all

the

way

from

beginning

to

end．

The

scientists

looked

at

tomato

plants

infested（寄生）

by

a

common

pest（害虫）.

To

start

out，

they

grew

plants

in

two

separate

plastic

spaces

connected

by

a

tube（管子）.

One

plant

was

infested

and

placed

upwind（逆风地）

and

the

other

was

not

infested

and

placed

downwind（顺风地）.

The

downwind

plants

were

later

exposed（暴露）

to

the

pest.

The

results

showed

that

plants

near

sick

neighbors

before

were

able

to

protect

themselves

better

against

the

pest．

They

found

one

chemical

appeared

more

often

in

the

exposed

plants.

The

chemical

is

called

HexVic.

The

scientists

discovered

where

HexVic

came

from，

and

put

it

over

healthy

plants.

Those

plants

were

then

able

to

produce

HexVic.

Researchers

made

sure

that

plants

that

were

not

infested

could

fight

off

bugs

and

diseases.

How

do

they

know

when

to

protect

themselves？

They

are

warned

first

by

their

friendly

plant

neighbors．

It

is

not

a

simple

story，

and

it

may

be

happening

in

more

plants

than

tomatoes.

It

may

also

be

happening

with

more

chemical

signals

that

are

still

unknown

to

us.

In

a

word，

we

know

that

plants

not

only

communicate，

but

also

look

out

for

one

another．(

)1.What

does

the

underlined

word

“traced”

in

the

fourth

paragraph

probably

mean？A.Reported.

B.Followed.

C.Doubted.

D.Developed．(

)2.For

scientists，

which

are

the

right

steps

to

watch

tomato

plants

infested

by

a

pest？①

Place

the

infested

plant

upwind．②

Place

the

plant

that

was

not

infested

downwind．③

Expose

the

downwind

plants

to

the

pest．④

Grow

plants

in

two

separate

plastic

spaces

connected

by

a

tube．A.③①②④

B.①④③②

C.④①②③

D.④②①③(

)3.You

can

put

the

sentence

“The

resear-chers

also

studied

leaves

from

exposed

plants

and

unexposed

plants.”

at

the

beginning

of______．A.Paragraph

3

B.Paragraph

4

C.Paragraph

5

D.Paragraph

6(

)4.What

would

be

the

best

title

for

this

passage？A.Communicating

Plants

and

Terrible

Diseases.

B.Talking

Plants

and

Friendly

Warnings.C.Protecting

Plants

and

Clear

Information.

D.Growing

Plants

and

Mysterious

Chemicals.BCDB第6课时（3a~Self

Check）一、请先阅读下面短文，掌握其大意，然后用方框中所给的词的适当形式填空。（每个词限用一次）move

enough

find

rain

makeuse

they

carry

trouble

friendly

You

may

think

there

is

nothing

but

sand

in

the

desert

of

the

world,

but

it

is

not

true.

In

the

desert

we

can

1.______

stones.

We

can

see

hills,

too.

There

is

a

little

2.______

in

the

desert,

but

it

is

not

3._________

for

most

plants.

The

animals

are

4.________

to

the

desert

people

in

many

ways.

The

desert

people

eat

the

meat

and

drink

the

milk

of

the

animals.

They

use

their

skins

to

5.________

shoes,

bags

and

even

tents（帐篷）.

They

use

the

camels（骆驼）

for

6.__________

things.findrainenoughusefulmakecarrying

The

people

of

the

desert

have

to

keep

7._________

from

place

to

place.

They

must

always

look

for

grass

or

desert

plants

for

their

animals.

They

usually

live

in

the

tents.

When

there

is

no

more

food

for

their

animals,

they

take

down

their

tents,

put

8.

________

on

the

camels

and

move

to

another

place.

The

desert

people

are

very

9.__________.

No

man

in

the

desert

would

ever

refuse

to

help

the

people

in

10._________

and

give

them

food

and

water.movingthemfriendlytrouble二、阅读短文，根据短文内容从下面的方框中，选择五个适当的句子还原到文中，使短文意思通顺、结构完整。

The

earth

is

about

4，600

million

years

old.

We

humans

have

lived

on

the

earth

for

only

about

35，000

years，

but

during

this

period

we

have

changed

our

planet

a

lot

in

many

ways.

1.

____

All

over

the

world，

people

have

cut

down

millions

of

trees，

so

more

and

more

kinds

of

animals

and

plants

are

disappearing.

In

big

cities，

cars

and

buses

have

polluted

the

air.

Factories

have

also

polluted

the

land

and

the

water．

2.

____

It

is

important

to

the

earth.

But

now

air

pollution

is

destroying

it

and

that

has

made

a

very

big

hole

in

the

ozone

layer（臭氧层）.

3.

____

This

is

very

dangerous

because

it

can

cause

cancer．

Carbon

dioxide（

CO2）

in

the

air

has

increased

a

lot.

4.

____

It

has

formed

a“blanket

（毛毯）”around

the

earth.

5.

____

This

makes

our

earth

become

warmer

and

warmer.

Therefore，

this

causes

the

level

of

the

ocean

to

rise．

All

these

problems

are

very

serious.

We

must

do

something

to

stop

our

earth

from

being

polluted．CFBGAA.

The

heat

from

the

sun

can’t

escape,

so

the

temperature

is

rising.B.

Too

much

harmful

light

from

the

sun

passes

through

it

and

reaches

the

earth

directly.C.

Some

things

we’ve

done

are

very

good

for

the

earth

while

some

are

bad.D.

People

know

nothing

about

that.E.

People

should

take

actions

to

stop

them.F.

Around

the

earth,

there’s

a

special

kind

of

oxygen（氧气）

called

“ozone（臭氧）”.G.

It

mainly

comes

from

different

kinds

of

burning

materials.三、书面表达。（请自备作文纸进行写作）

如今，很多野生动物濒临灭绝。假如你是苏珊，英语老师要求你在明天的英语课上，以

“Let’s

Protect

the

Endangered

Animals!”为主题进行英语演讲，号召大家保护这些动物。请你根据下面的图表信息，用英语准备一篇演讲稿。

要求：1.

演讲稿要包括图表中给出的所有提示，可适当拓展；

2.

词数不少于80，开头已给出，不计入总词数。参考词汇:

die

out

灭绝;

nature

reserves

自然保护区

Hi,

everyone!

I’m

Susan.

It’s

my

turn

to

make

an

English

speech

on

“Let’s

Protect

the

Endangered

Animals!”

Hope

you

all

can

enjoy

it.

__________________________