新概念英语第二册L53+Hot+snake课件

Lesson53HotSnake1Vocabulary2TextAnalysisCONTENT3GrammarVocabulary01(adj.)带电的，充电的

hotThiscausesafire.cause(v.)引起Thisisoftenthecauseofafire.(n.)原因That’sthe_________why+句子reasonSparkisoftenthe______offires.Thereisno________forhisgettinglost.Ihavemany_______toworryabouthim.Thatisthe_______whyhedoesnottellyouthetruth.causereasonreasonsreasoncauseofreasonfor/todo(n.)原因reasonVScausesparkn.电火花firemanIneedafireman!firefighterThefiremenputoutthefireonhisheadandexaminedthecausecarefully.examine(v.)检查examination-exam-examineraccidentally(adv.)偶然地，意外地accidentaccidentalYourhaircaughtfireaccidentally.Helookedattheremainsofhishairsadly.remain(n.)残骸，尸体theremainsofhishairtheremainsofabodytheremainsofYuanMingYuanRemainstill!Freeze!(v.)保持remain+adj.remaindoingkeepdoingWhocansolvethemystery?Whowantsmylife?solvethemystery(v.)解决，解开(n.)谜Iwon'tlaughattheremainsofyourhair.Pleasedon'tkillme.TEXT02At

last

firemen

have

put

out

a

big

forest

fire

in

California.

Since

then

,

they

have

been

trying

to

find

out

how

the

fire

began.

Forest

fires

are

often

caused

by

broken

glass

or

by

cigarette

ends

which

people

carelessly

throw

away.

Yesterday

the

firemen

examined

the

ground

carefully,

but

were

not

able

to

find

any

broken

glass.

They

were

also

quite

sure

that

a

cigarette

end

did

not

start

the

fire.

This

morning

,

however

,

a

fireman

accidentally

discovered

the

cause.

最后扑灭一场森林大火从那时起现在完成进行时宾语从句被动语态能够做…宾语从句发现原因起火一条蛇的残骸绕在…以这种方式解决这个谜题抓取扔在…上He

noticed

the

remains

of

a

snake

which

was

wound

round

the

electric

wires

of

a

16,000-volt

power

line.

In

this

way,

he

was

able

to

solve

the

mystery.

The

explanation

was

simple

but

very

unusual.

A

bird

had

snatched

up

the

snake

from

the

ground

and

then

dropped

it

on

to

the

wires.

The

snake

then

wound

itself

round

the

wires.

When

it

did

so,

it

sent

sparks

down

to

the

ground

and

these

immediately

started

a

fire.

Grammar03I

collected

his

posters

10

years

ago.现在完成进行时I

have

been

collecting

him

for

10

years.She

is

reading

a

book.现在进行时表示现在正在读书She

has

read

a

book.现在完成时表示现在读完书了She

has

been

reading

a

book.现在完成进行时表示过去到截止说话为止，一直在读书，可能接着还读书现在完成进行时1.动作自过去开始，持续到现在，可能继续持续下去2.从过去到现在反复发生的动作，对现在产生影响3.表示从过去到现在反复发生的动作现在完成进行时构成1.肯定句：

主语+have/has

been

doing

2.否定句：

主语+haven’t/hasn’t

been

doing