九年级 英语 上册《Unit 6 Section B (1a-1e)》课件

英语教学课件（RJ）Goforit!九年级（上）SectionB(1a-1e)Unit6Whenwasitinvented?LearningGoalsKeywords&phrases:crispy,salty,sour,bymistake,customerKeysentences:1.Potatochipswereinventedbymistake.2.Thecustomerthoughtthepotatoeswerenotthinenough.Studentscanintroducehowakindoffoodwasinvented.Words&Expressionscrispysaltysourbymistakecustomeradj.

脆的；酥脆的adj.咸的adj.酸的；有酸味的错误地；无意中n.顾客；客户WarmingupDoyoueatsnacks?Whatsnacksdoyouliketoeat?Think-Pair-SharesoursweetbitterspicycrispyhardsoftgreasyS1:Whatdoes...tastelike?S2:Ittastes...Whatdoesit/dotheytastelike?Whatkindoffoodcanyouseeinthesepictures?potatochipslemonice-creamsaltedeggsPre-listening1aThewordsintheboxdescribehowfoodcantaste.Writethemunderthecorrectpictures.Somepictureshavemorethanoneword.sweetcrispysaltysourPre-listeningPre-listeningCanyouthinkofsomefoodthatissweet?sweetCanyouthinkofsomefoodthatiscrispy?crispyPre-listeningCanyouthinkofsomefoodthatissalty?saltyPre-listeningCanyouthinkofsomefoodthatissour?sourPre-listeningPre-listening1bWritethenameofadifferentfoodaftereachword.sweet__________crispy__________salty__________sour__________Answerthequestionsabout1cbeforelistening.1.Whatarethetwoboysinthepicturetalkingabout?2.Wheredoesthisstorytakeplace?Pre-listening1cWhile-listeningListenandcircleTfortrueorFforfalse.1.Potatochipswereinventedbymistake.TF2.Theywereinventedin1863.TF3.Thecustomerthoughtthepotatoeswerenotthinenough.TF4.Thecustomersaidtheywerenotsaltyenough.TF5.Georgewantedtomakethecustomerhappy.TF6.Thecustomerwashappyintheend.TF1dListenagain.Completethesentences.TheHistoryofPotatoChipsDoyouknowhowpotatochipswereinvented?Potatochips_____________byacookcalledGeorgeCrum.Theywereinventedin________.GeorgeCrumcutthepotatoesreally,really______andthencookedthemforalongtimeuntiltheywere_________.Finallyheputlotsofsaltonthemsotheywere

___________.wereinvented1853thincrispyreallysaltyWhile-listeningListeningMaterialBoy

1:

Hey,

did

you

know

that

potato

chips

were

inventedby

mistake?

Boy

2:

Really?

What

do

you

mean?

Boy

1:

Well,

here

on

the

bag

it

says

that

they

were

inventedby

a

cook

called

George

Crum.

Boy

2:

When

was

that?

Boy

1:

Oh,

it

was

back

in

1853.

Boy

2:

So,

why

was

it

an

accident?

Boy

1:

Well,

one

day,

a

customer

came

into

the

restaurant

where

George

worked.

He

ordered

a

plate

of

fried

potatoes.

When

thepotatoes

came,

he

said

they

were

cut

too

thick

and

sent

them

back

tothe

kitchen.

Boy

2:

So

what

happened?Boy

1:

Well,

George

was

angry,

so

he

cut

the

potatoesreally,really

thin,

andhe

cooked

them

for

a

longtime

until

they

were

crispy.

And

he

put

lots

of

salt

on

them

so

they

were

really

salty.

He

thought

the

customer

would

hate

them.Boy

2:

And?Boy1:

And

the

customer

loved

them

and

asked

for

more.

He

told

theother

customers

about

them,

and

soon

everyone

was

ordering

thinly

cut,

crispy,

salty

potato

chips.Boy

2:

And

we’re

still

eating

them

today.What

a

cool

story!

Answerthequestions.1.Howandwhenwerepotatochipsinvented?2.Whatwasthenameoftheinventor?Whatwashisjob?3.Whywasitamistake?Whatdidthecookdowiththepotatoesthen?4.Howcanyoumakefoodcrispy/salty?5.Whatcanwelearnfromthestory?Doyouwanttobeaninventor?Post-listening1eA:Didyouknowpotatochipswereinventedbymistake?B:Wow,Ididn’tknowthat.Whoinventedthem?A:...Post-listeningMakeaconversationabouttheinventionofpotatochips.Usetheinformationin1cand1d.LanguagePoints①Potatochipswereinventedbymistake.（教材P45）bymistake为介词短语，意为“无意中；错误地”,相当于accidentally。

e.g.Imissedtheschoolbusbymistakethismorning.

今天早上我无意中错过了校车。

Itookyourpenbymistake.

我错拿了你的钢笔。

Thecustomerthoughtthepotatoeswerenot

thinenough.

（教材P45）enough修饰名词时不需要倒装。e.g.Thereisn’tenoughfoodleftinthefridge.

冰箱里剩的食物不多了。enough修饰形容词、副词时需要倒装。e.g.He’stallenoughtochangethebulbwithoutgettingonachair.

他个头够高，不用踩椅子就可以换灯泡。enough常可以和词组so...that...,too...to...转换。例如：用enoughHedidn’trunfastenoughtocatchupwiththeothers.用so...that...Heransoslowlythathecouldn’tcatchupwiththeothers.用too...to...Herantooslowlytocatchupwiththeothers.Thecustomerwashappyintheend.（教材P45）intheend的意思是“后来，最后，终于”，intheend用一个单词表达可以用finally，用一个短语表达可以用atlast。e.g.Hewonintheend.

Hewonfinally.Hewonatlast.【拓展】attheendof...

在......末bytheendof...

到......末为止e.g.Attheendofthismonthwe’llhaveameeting.

这个月月末我们将会开个会。

Bytheendoflastyearwe’vemadetenmodelplanes.

到去年末为止我们已经做了十架飞机模型了。Exercises用所给单词的正确形式填空。1.TheTV____________(invent)around1927.2.Theyareusedfor_______(see)inthep