Module

5

A

lesson

in

a

labPeriod

1Teaching

aims:1.

Let

the

students

know

somewords

related

to

experiments,

the

lab

and

something

like

that2.

Review

the

usageof

numbers/

fractions/

percentages3.

Know

sth

about

Degrees

of

comparison.Teaching

steps:I.

All

of

us

have

learned

physics,

biology

and

chemistry

in

middle

school.

Now

let’s

have

a

test

to

seehow

much

you

know.Deal

with

Activity

1

on

page

41.

Choosethe

correct

answersto

thequiz.Now

play

the

tape

for

thestudents

to

listen

and

check

their

answers.Answers:1a

2a

3

a

4a

5

b

6b

7

bII.

First

read

the

words

and

then

ask

the

ss

to

translate

them

into

Chinese.

At

last

put

them

in

pairs

orgroups.Answers:air-gas-oxygencontract-expandearth-

sun-

moon

gas-liquid-solid

III..

Answer

thequestions.

Answers:

1)

Electricity,

iron,

somemetals

and

air

are

natural

2)

Steel,

somemetals

and

glass

areman-made

3)

Electricity

and

somemetals

can

be

man-madeand

occur

naturallyIV.

Turn

to

page

42.Activity

1

Read

the

numbers.

Pay

attention

to

the

position

of

the

word

“and”.V.

Fractions.基數(shù)詞+序數(shù)詞，當分子大于

1

時，分母要加

s作主語時，謂語動詞要根據

of

后面的名詞決定。Answers:two-fifthsfive-eighthsnine-tenthsthree-eighthsfive-sixthsVI.

Percentages基數(shù)詞+

percent/

per

cent

注意：percent

永遠單數(shù)形式作主語時，謂語動詞要根據

of

后面的名詞決定。VII.

Degreesof

comparison

1

&

2英語倍數(shù)表達法用英語表達"A

是

B

的

N

倍長（寬，高，大，重等）"，"A

比

B

長（寬，高，大，重等）N

倍"

或"A

的長度（寬度，高度，大小，重量等）是

B

的

N

倍"，可用下列幾種句型。1."A

+

be

+

倍數(shù)

+

as

+

計量形容詞原級

+

as

+

B".This

tree

is

threetimes

as

tall

as

that

one.

這棵樹是那棵樹的三倍高。His

father

is

twiceas

old

as

he.

他父親的年紀有他兩倍大。2."A

+

be

+

倍數(shù)

+

計量形容詞比較級

+

than

+

B

"TheYangtze

River

is

almost

twicelonger

than

the

Pearl

River.長江差不多比珠江長兩倍。Thedictionary

is

exactly

five

times

more

expensive

than

that

one.這本字典比那本恰好貴

5

倍。3."A

+

be

+

倍數(shù)

+

the

+

計量名詞

+

of

+

B

"Thenewly

broadened

squareid

four

times

the

size

of

the

previous

one.新擴建的廣場是未擴建時的四倍大。4."The

+

計量名詞

+

of

+

A

+

be

+

倍數(shù)

+

that

+

of

+

B

"Thesize

of

thenewly

broadened

squareis

four

times

that

of

the

previous

one.新擴建的廣場為以前的四倍大。5.其它I'm

twice/

double

his

age.

我的年齡是他的兩倍。I'vepaid

five

times

theusual

price

for

thestamp.我出了

5

倍于往常的價格買這枚郵票。The

average

income

of

thestaff

has

been

increased

by

50

percent

compared

with

last

year.

與去年相比，該單位職工的收入增加了

50%.Theprice

of

TVs

aretwofold(

adj.

兩部分的,

雙重的)

down

over

these

years.近幾年來，電視機的價格下降了兩倍。the

+比較級……，the+比較級……意為“越……，越……”。前面部分是從句，后面部分是主句。Theharder

you

work,

themoresuccessfulyou

will

be.Theearlier

you

come,

thebetter

place

you

can

find.“比較級+and+比較級”表示“越來越……”。He

becomes

fatter

and

fatter．比較級前還可以用

much，even，still，a

little

等來修飾。Ⅶ

Home

workDeal

with

the

exercises

on

pages

45

,

46

and

47Module

5

A

lesson

in

a

labPeriod

2Teaching

aims:1.

Revise

theusage

of

Degrees

of

Comparison

by

translating

some

sentences.2.

Know

moreabout

thetwo

experimentsTeaching

steps:I.

Translatethe

following

sentences

into

English.1．這座新大樓是那幢舊樓的

3

倍大小。Thenew

building

is

three

times

thesize

of

theold

one.Thenew

building

is

three

times

larger

than

the

old

one.Thenew

building

is

three

times

as

large

as

the

old

one.2．孫老師說英語和你一樣流利。Mr

Sun

speaks

English

as

fluently

as

you.3．他越努力學習，就越感到快樂。Theharder

heworks,

thehappier

hefeels.4．那個女孩越長越漂亮了。Thegirl

becomes

moreand

morebeautiful.II.

Cometo

theReading

and

Vocabulary.Ask

the

question:

What

are

the

stages

of

ascientific

experiment?Theyareasfollows:aim—methodresult—conclusionNow

read

passageA

and

finish

Activities

2

and

3.Answer:The

reaction

of

metalsAnswers:

1.potassium,calcium,andsodium

2.Itburnstoformanoxide

3.Magnesium,aluminum,andzinc

4.

It

has

a

slow

reaction.

5.

No,

it

doesn’t.III.

Preparefor

thetest.Preparesometest

tubes,

someoil,

test

tubeholder,

cotton

wool,

iron

nails,

Bunsen

burner.

Describetheexperiment

to

the

students

and

ask

thestudents

to

explain

what

will

happen

in

the

end.

Ask

the

students

to

read

PassageB

and

try

to

fill

in

the

table

on

page

45.

Answers:Iron

in

dry

airironinair-free

iron

in

ordinarywaterwaterStageAStartingexperimentcotton

woolwaterwaterStageB1weeklaternailswaterStageCIron

doesn’t

rustIron

does

not

rust.Iron

rusts.Result

Ask

the

students

to

read

the

text

for

some

time

and

try

to

retell

theexperiment

with

the

help

ofthe

table.If

there

is

time,

checkif

somecan.IV.

Homework:Retell

the

experiment

and

report

a

similar

experiment.Module

5

A

lesson

in

a

labPeriod

3Teaching

aims:Enabling

the

students

to1.

know

how

to

read

the

decimals.2.

know

sth

about

the

scienceteaching

in

a

senior

high

school.Teaching

steps：I.

Ask

somestudents

to

read

the

following

numbers:623,100,486563,256,36912,000,865,0653/72/93/1026%48%0.83.6

19.36

22.58II.

Deal

with

Everyday

English

on

page

48.

Answers：1a2b3a4b5aIII.

Turn

to

page49.

Cultural

Corner.

Look

at

this

photo.

This

boy

is

Mark

Kendon.

Mark

Kendon

is

a

Canadian

student

at

Senior

Highschool.

The

passage

is

about

his

description

of

science

teaching

in

his

school.

Now

read

the

passagequickly

and

try

to

find

theanswers

to

thefollowing

question:

Why

has

Mark

becomemoreinterested

in

science?

--Becausehehas

moved

to

a

new

schoolwith

good

facilities

and

teachers.Read

the

passageagain

and

try

to

get

as

much

information

as

possible.

Do

thefollowing

questions.Was

Mark

interested

in

scienceat

fir