九年級下冊 英語 第四單元《Lesson 4 Grammar》課件

九年級下冊—上海教育出版社—英語—第四單元Unit4NaturaldisastersLesson4Grammar學習目標通過這節(jié)課的學習，你將能做到以下幾點：1.理解it作為形式主語的三種用法；2.適當運用it作為形式主語作一個天氣報告；3.樹立安全意識，增強防風避險能力。Howmany

pronouns

it?What’sthemeaningofit?It

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

沒有指代具體的事物

What’sthemeaningofit?What’sanemptysubject?Israining.Itisraining.“It”作為形式主語，沒有實際語義。缺乏主語。Tellthemeaningsofit.It

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

沒有指代具體的事物。

It作為形式主語，沒有實際語義。28“It”作為形式主語，沒有實際語義。第二個it指代具體事物(work)第一個It

沒有指代具體的事物

Tellthemeaningsofit.“It”

作為形式主語，沒有具體語義?！癐t”

用于指代具體事物圖片來源于網絡HaveyoueverexperiencedafloodinGuangzhou?圖片來源于網絡TyphoonlandingsinChinainthepast70years↓morethan250timesinGuangdong17times圖片來源于網絡圖片來源于網絡Typhoonaffectsourdailylives.BenandJaneareplanningtogocampingwiththeirfriendsthisweekend.But...圖片來源于網絡BenandJanecampingListentoaconversationandanswerthequestions.1.What’sthetimenow?2.Whatistheweatherliketoday?3.Whatistheseason?4.Whatisthetemperature?5.Howfarawayisthetyphoonfromthem?It’ssixo’clock.It’srainy.It’sautumn.It’s24degreescentigrade.It’sabout200km.圖片來源于網絡BenandJaneIt’ssixo’clock.It’srainy.It’sautumn.It’sabout200kmawayfromthem.It’s24degreescentigrade.用法1：it作形式主語表示時間、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.圖片來源于網絡BenandJaneareupsetbecausethetyphoonmakesthemcancelthecamping.

Itappearsthatarainstormiscoming.Itseemsthatheisnothappywiththecancellation.圖片來源于網絡Benisfrowning.取消n.形式主語用法2：it作形式主語用于Itseems/appearsthat...的句型我們常使用帶“形式主語it”的結構，將充當主語的從句移到句末。Itappearsthatarainstormiscoming.Itseemsthatheisnothappywiththeweather.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~真正的主語Itseemsthatheisnothappywiththecancellation.圖片來源于網絡WhatshouldIdonow?

圖片來源于網絡Itseemsthattheywilltakearaincheck.

Benmakesanewplanforthecamping.圖片來源于網絡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.圖片來源于網絡Itisdangeroustostandunderatree.=Tostandunderatreeisdangerous.Howcanwestaysafeduringatyphoon?

thunderstorm圖片來源于網絡Itisagoodideatostayathome.=Tostayathomeisagoodidea.Howcanwestaysafeduringatyphoon?

圖片來源于網絡Itisimportanttostaycalm.=Tostaycalmisimportant.Itisdangeroustostandunderatree.=Tostandunderatreeisdangerous.Itisagoodideatostayathome.=Tostayathomeisagoodidea.當句子的主語是動詞不定式短語時，動詞不定式短語一般不放在句首，而通常用it來作為句子的開頭，動詞不定式短語則放在句末。用法3：It作形式主語代替todoGivesomeadvicetoJanebyusing

Itis+adj.+todosth.food,water,survivalkit/prepare/necessarytheweatherupdates/important/listentonow/thebeach/goto/sillyflowerpots/goodidea/bringin圖片來源于網絡It’snecessarytoprepareenoughwater,foodandasurvivalkit.water,food,asurvivalkit/prepare/necessary圖片來源于網絡圖片來源于網絡theweatherupdates/important/listento

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

foryoutoprepareenoughwater,foodandasurvivalkit.It’simportant

foryoutolistentoweatherupdates.It’ssilly

ofyoutogotothebeachnow.形容詞介詞Itis+

形容詞

+(forsb.)+todosth.句型通常與表達必要性(necessary)、重要性(important)、危險性(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粗魯的brave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

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

tohaveyouhere.Itwas

anexcitingmovietowatch.Let’shaveatry.1.臺風來之前做一個計劃是很重要的。______________

veryimportanforus______________aplanbeforethetyphooncomes.2.刮臺風的時候遠離窗戶是個好主意。It______________

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

--臺風之后自來水似乎被污染了。--Whycan’twedrinkthetapwater,mum?--_______________________________thewaterispollutedafterthetyphoon.Itis

tomake

isagoodidea

Itseems/appearsthat

Hello,everyone.Itis_________________________________________Speaking圖片來源于網絡

假如你是學校英語電臺的主播，請你播報今天的天氣，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.圖片來源于網絡林安兒Lifeisprecious!Wemustbecareful!圖片來源于網絡Summary&Assessment通過這節(jié)課的學習，你能做到以下幾點：1.理解it作為形式主語的三種用法；2.適當運用it作為形式主語的句式作一個報告；3.樹立安全意識，增強防風避險能力。圖片來源于網絡MakeaposteronHowToStaySafeDuringTyphoons.Homework圖片來源于網絡Thankyou!圖片來源于網絡九年級下冊—上海教育出版社—英語—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

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

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

+(forsb.)+todosth.Isitanopportunaty(forhim)toworkinGuangzhou?改變be的時態(tài)：一般過去時：ItwasMay5,whenthetyphoonlandedintheircity.一般將來時：Itwillbesunnynextweek.現在完成時：Itha