九年級(jí)下冊(cè) 英語(yǔ) 第四單元《Lesson 4 Grammar》課件

九年級(jí)下冊(cè)—上海教育出版社—英語(yǔ)—第四單元Unit4NaturaldisastersLesson4Grammar學(xué)習(xí)目標(biāo)通過(guò)這節(jié)課的學(xué)習(xí)，你將能做到以下幾點(diǎn)：1.理解it作為形式主語(yǔ)的三種用法；2.適當(dāng)運(yùn)用it作為形式主語(yǔ)作一個(gè)天氣報(bào)告；3.樹(shù)立安全意識(shí)，增強(qiáng)防風(fēng)避險(xiǎn)能力。Howmany

pronouns

it?What’sthemeaningofit?It

指代具體事物(water)“It”作為形式主語(yǔ)(emptysubject)。13It

沒(méi)有指代具體的事物

What’sthemeaningofit?What’sanemptysubject?Israining.Itisraining.“It”作為形式主語(yǔ)，沒(méi)有實(shí)際語(yǔ)義。缺乏主語(yǔ)。Tellthemeaningsofit.It

指代具體事物/事件(water/manycitieswouldbefloodedanddisappear)Tellthemeaningsofit.It

沒(méi)有指代具體的事物。

It作為形式主語(yǔ)，沒(méi)有實(shí)際語(yǔ)義。28“It”作為形式主語(yǔ)，沒(méi)有實(shí)際語(yǔ)義。第二個(gè)it指代具體事物(work)第一個(gè)It

沒(méi)有指代具體的事物

Tellthemeaningsofit.“It”

作為形式主語(yǔ)，沒(méi)有具體語(yǔ)義?！癐t”

用于指代具體事物圖片來(lái)源于網(wǎng)絡(luò)HaveyoueverexperiencedafloodinGuangzhou?圖片來(lái)源于網(wǎng)絡(luò)TyphoonlandingsinChinainthepast70years↓morethan250timesinGuangdong17times圖片來(lái)源于網(wǎng)絡(luò)圖片來(lái)源于網(wǎng)絡(luò)Typhoonaffectsourdailylives.BenandJaneareplanningtogocampingwiththeirfriendsthisweekend.But...圖片來(lái)源于網(wǎng)絡(luò)BenandJanecampingListentoaconversationandanswerthequestions.1.What’sthetimenow?2.Whatistheweatherliketoday?3.Whatistheseason?4.Whatisthetemperature?5.Howfarawayisthetyphoonfromthem?It’ssixo’clock.It’srainy.It’sautumn.It’s24degreescentigrade.It’sabout200km.圖片來(lái)源于網(wǎng)絡(luò)BenandJaneIt’ssixo’clock.It’srainy.It’sautumn.It’sabout200kmawayfromthem.It’s24degreescentigrade.用法1：it作形式主語(yǔ)表示時(shí)間、季節(jié)、天氣、距離或溫度timeweatherseason1.Whatisthetimenow?2.Whatistheweatherliketoday?3.Whatistheseasonnow?

Let’shaveatry.It’s2o’clockintheafternoon.

It’sSunnyoutthere.

It’sspring.P56B

Putthewordsinthecorrectordertomakemeaningfulsentences.Itistimeforsuppernow.ItisautumninAustralianow.Itisaboutfivekilometrestothepark.Itwaswindyyesterday.Therearemanydarkclouds,andthewindisblowingstrongly.圖片來(lái)源于網(wǎng)絡(luò)BenandJaneareupsetbecausethetyphoonmakesthemcancelthecamping.

Itappearsthatarainstormiscoming.Itseemsthatheisnothappywiththecancellation.圖片來(lái)源于網(wǎng)絡(luò)Benisfrowning.取消n.形式主語(yǔ)用法2：it作形式主語(yǔ)用于Itseems/appearsthat...的句型我們常使用帶“形式主語(yǔ)it”的結(jié)構(gòu)，將充當(dāng)主語(yǔ)的從句移到句末。Itappearsthatarainstormiscoming.Itseemsthatheisnothappywiththeweather.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~真正的主語(yǔ)Itseemsthatheisnothappywiththecancellation.圖片來(lái)源于網(wǎng)絡(luò)WhatshouldIdonow?

圖片來(lái)源于網(wǎng)絡(luò)Itseemsthattheywilltakearaincheck.

Benmakesanewplanforthecamping.圖片來(lái)源于網(wǎng)絡(luò)1sunny/willbe/it/nextSaturday____________________________________2aboutthirtykilometres/it/is/tothecampground____________________________________3theywill/seems/it/havesomuchfun/that_____________________________________ItwillbesunnynextSaturday.Itisaboutthirtykilometrestothecampground.Itseemsthattheywillhavesomuchfun.Let’shaveatry.Putthewordsinbracketsinthecorrectordertocompletetheconversations.Itseemsthatatyphooniscoming.Itappearsthattheflighthasbeencancelled.Itseemsthatsomethingbadhashappenedtoher.Iheardthatshelostherpurse.Howcanwestaysafeduringatyphoon?

Itisimportanttostaycalm.=Tostaycalmisimportant.圖片來(lái)源于網(wǎng)絡(luò)Itisdangeroustostandunderatree.=Tostandunderatreeisdangerous.Howcanwestaysafeduringatyphoon?

thunderstorm圖片來(lái)源于網(wǎng)絡(luò)Itisagoodideatostayathome.=Tostayathomeisagoodidea.Howcanwestaysafeduringatyphoon?

圖片來(lái)源于網(wǎng)絡(luò)Itisimportanttostaycalm.=Tostaycalmisimportant.Itisdangeroustostandunderatree.=Tostandunderatreeisdangerous.Itisagoodideatostayathome.=Tostayathomeisagoodidea.當(dāng)句子的主語(yǔ)是動(dòng)詞不定式短語(yǔ)時(shí)，動(dòng)詞不定式短語(yǔ)一般不放在句首，而通常用it來(lái)作為句子的開(kāi)頭，動(dòng)詞不定式短語(yǔ)則放在句末。用法3：It作形式主語(yǔ)代替todoGivesomeadvicetoJanebyusing

Itis+adj.+todosth.food,water,survivalkit/prepare/necessarytheweatherupdates/important/listentonow/thebeach/goto/sillyflowerpots/goodidea/bringin圖片來(lái)源于網(wǎng)絡(luò)It’snecessarytoprepareenoughwater,foodandasurvivalkit.water,food,asurvivalkit/prepare/necessary圖片來(lái)源于網(wǎng)絡(luò)圖片來(lái)源于網(wǎng)絡(luò)theweatherupdates/important/listento

It’simportanttolistentoweatherupdates.flowerpots/goodidea/bringinIt’sagoodideatobringintheflowerpots.圖片來(lái)源于網(wǎng)絡(luò)圖片來(lái)源于網(wǎng)絡(luò)It’ssillytogotothebeachnow.now/thebeach/goto/sillyWecanalsosay...It’snecessary(foryou)toprepareenoughwater,foodandasurvivalkit.It’simportant(foryou)tolistentotheweatherupdates.It’ssilly(ofyou)togotothebeachnow.圖片來(lái)源于網(wǎng)絡(luò)Whatarethedifferences圖片來(lái)源于網(wǎng)絡(luò)It’snecessary

foryoutoprepareenoughwater,foodandasurvivalkit.It’simportant

foryoutolistentoweatherupdates.It’ssilly

ofyoutogotothebeachnow.形容詞介詞Itis+

形容詞

+(forsb.)+todosth.句型通常與表達(dá)必要性(necessary)、重要性(important)、危險(xiǎn)性(dangerous)及可能性(impossible)等的形容詞連用。It’snecessary

(foryou)toprepareenoughwater,foodandasurvivalkit.It’simportant

(foryou)tolistentoweatherupdates.Itisdangerous

(forus)tostandunderatree.Itisimpossible

(forBen)togocampingthisweekend.拓展1：Itis+形容詞

+forsb.+todosth.句型convenient方便的difficult困難的easy容易的hard困難的possible可能的safe安全的unsafe不安全的educational有教育意義的It’ssilly

(ofyou)togotothebeachnow.Itisthoughtful

(ofyou)toturnoffpower,gasandwater.Itissensible

(ofBen)totakearaincheck.generous大方的kind善良的mean刻薄的nice和善的polite有禮的rude粗魯?shù)腷rave勇敢的cruel殘忍的拓展2：Itis+形容詞

+ofsb.+todosth.句型Itis+

形容詞

+(ofsb.)+todosth.句型通常與描述人物品格的形容詞連用。拓展3：Itis+名詞/名詞短語(yǔ)

+(forsb.)+todosth.句型It’stimeformetostudy.It’sagoodideatobringintheflowerpots.It’sa(great)pleasureforus

tohaveyouhere.Itwas

anexcitingmovietowatch.Let’shaveatry.1.臺(tái)風(fēng)來(lái)之前做一個(gè)計(jì)劃是很重要的。______________

veryimportanforus______________aplanbeforethetyphooncomes.2.刮臺(tái)風(fēng)的時(shí)候遠(yuǎn)離窗戶是個(gè)好主意。It______________

______________tostayawayfromthewindowsduringatyphoon.3.--媽媽，為什么我們不能喝水龍頭的水？

--臺(tái)風(fēng)之后自來(lái)水似乎被污染了。--Whycan’twedrinkthetapwater,mum?--_______________________________thewaterispollutedafterthetyphoon.Itis

tomake

isagoodidea

Itseems/appearsthat

Hello,everyone.Itis_________________________________________Speaking圖片來(lái)源于網(wǎng)絡(luò)

假如你是學(xué)校英語(yǔ)電臺(tái)的主播，請(qǐng)你播報(bào)今天的天氣，并給予防御建議。Safetytips

Hello,everyone.It’sMay21,2022.

ThisisAnn.Andhereistoday’sweatheroutlookinGuangzhou.First,let’sseewhattheweatherisliketoday.It’srainyalldaytoday.Anditisalsoquitewindy.Thetemperatureistwentydegreescentigrade.Itseemsthatatyphoonisabouttocome.Isuggestyoushouldstaycalm.It’snecessaryforyoutoprepareenoughwater,foodandasurvivalkit.Doremembertomonitortheweatherupdates.It’sagoodideatotakearaincheckforoutdooractivitiessuchascampingorgoingtothebeach.Lifeisprecious,pleasestaysafeduringtyphoons.圖片來(lái)源于網(wǎng)絡(luò)林安兒Lifeisprecious!Wemustbecareful!圖片來(lái)源于網(wǎng)絡(luò)Summary&Assessment通過(guò)這節(jié)課的學(xué)習(xí)，你能做到以下幾點(diǎn)：1.理解it作為形式主語(yǔ)的三種用法；2.適當(dāng)運(yùn)用it作為形式主語(yǔ)的句式作一個(gè)報(bào)告；3.樹(shù)立安全意識(shí)，增強(qiáng)防風(fēng)避險(xiǎn)能力。圖片來(lái)源于網(wǎng)絡(luò)MakeaposteronHowToStaySafeDuringTyphoons.Homework圖片來(lái)源于網(wǎng)絡(luò)Thankyou!圖片來(lái)源于網(wǎng)絡(luò)九年級(jí)下冊(cè)—上海教育出版社—英語(yǔ)—第四單元Unit4NaturaldisastersLesson4Grammar(答疑）否定句式：Itis+not+形容詞

+(for/ofsb.)+todosth.Itisnotsafe(forhim)totakewrongactions.答疑1：Itis+todo句型的否定句式是什么？否定句式：Itis+not+名詞/名詞短語(yǔ)

+(forsb.)+todosth.Itisnotagoodidea(forthem)togooutdoorsduringatyphoon.疑問(wèn)句式：Isit+形容詞

+(for/ofsb.)+todosth.Myphoneisdead.Isitpossible(forus)toaskforhelp?答疑2：Itis+todo句型的疑問(wèn)句式是什么？疑問(wèn)句式：Isit+名詞/名詞短語(yǔ)

+(forsb.)+todosth.Isitanopportunaty(forhim)toworkinGuangzhou?改變be的時(shí)態(tài)：一般過(guò)去時(shí)：ItwasMay5,whenthetyphoonlandedintheircity.一般將來(lái)時(shí)：Itwillbesunnynextweek.現(xiàn)在完成時(shí)：Itha