Unit3Lesson16教學目標1Masternewwordsandphrasesoflesson16.2Knowsafetytipstopreventaccident.3Togivewarningwithimparetives（祈使句）.核心素養(yǎng)實踐創(chuàng)新1.勞動意識：通過對祈使句的練習，讓學生學會預防家庭事故。2.技術運用：讓學生了解安全知識，培養(yǎng)安全意識。教學重點掌握本課詞匯與短語。教學難點學會預防家庭事故的建議。教學過程一、導入新課Wordsandexpressionspre/ventv.阻止；預防cer/tainadj.某些；某個them/selvespron.他(她、它)們自己bakingn.烘焙so/dan.蘇打saltv.食鹽scissorsn.剪刀kni/fen.刀poi/sonn.毒藥；毒物heatn.高溫；熱；爐灶v.加熱burnv.燒傷；燙傷；燃燒bath/tubn.浴缸；浴盆slipv.滑倒Mainphrases:putoutbakingsodahurtoneselffalloffbecarefulwithListentothetapeandfindoutthenewwordsandphrasesinthetext.二、新課講解FreeTalkLeadinWhatplacemakesyoufeelthemostfortable?Doyouthinkyourhomeisasafeplace?bedroomlivingroomkitchenelectricappliancebathroomLanguagepoints1.Canpeoplepreventcertainaccidents?人們能阻止某些事故嗎？(1)prevent〔及物動詞〕阻止；防止prevent...(from)doingsth.=stop...(from)doingsth.阻止……做某事Wemustdosomethingtopreventfires.我們必須做點兒事來預防火災。Theheavyrainstoppedsoldiers(from)movingon.大雨阻止了士兵們繼續(xù)前進。(2)certain〔形容詞〕①某些；某個常在名詞前作定語。Thelibraryisonlyopenatcertaintimesofday.這座圖書館只在一天的某些時段開放。②確定；無疑;確信不在名詞前作定語。becertainof/about...對……確定becertainthat...確信……Areyoucertainabout/ofthat?你肯定是那樣嗎？I’mcertainthatIleftthekeysinthekitchen.我確定把鑰匙落在廚房里了。2.Manypeoplehurtthemselvesbyfallingoffchairs.很多人從椅子上掉下來傷著自己。falloff①從……上掉下來（=falldownfrom...）Becareful,oryou’llfalloffthetree.當心，否則你會從樹上掉下來。②掉落；跌落（=falldown）Dannyfelloffandhurthimself.丹尼掉下來了，并傷著了自己?！就卣埂縡all的常考短語還有：fallover跌倒fallasleep入睡；睡著fallinlovewith...愛上……3.Don’tusewatertoputoutkitchenfires.不要用水來撲滅廚房里的火。putout撲滅；熄滅該短語為“動詞+副詞”結構，代詞作其賓語時，應位于put和out之間；名詞作其賓語時，可位于兩詞之間也可位于out之后。Fireisdangerous.Pleaseputitout.火是危險的，請熄滅它?！就卣埂縫ut的?？级陶Z還有：puton穿上；上演putaway收起來，收拾putdown放下；寫下putin放進putoff推遲；延期putback放回putup舉起；張貼；豎起；搭建Becarefulwithscissorsandknives！使用剪刀和刀子要小心?。?）scissors〔名詞〕剪刀在英語中，由兩部分構成的物體常以復數(shù)形式存在，通常用apairof來說明其數(shù)量。Look！Fivepairsofscissorsareonthetable.看！桌子上有五把剪刀。（2）knife〔名詞〕刀。其復數(shù)形式為knives。aknife一把刀fiveknives五把刀【拓展】英語中，常見的以f/fe結尾，變復數(shù)時要把f/fe變?yōu)関再加es的單詞還有：half（半）leave（樹葉）self（自己）wife（妻子）shelf（架子）wolf（狼）thief（小偷）life（生命）【助記】巧記復數(shù)形式需把f/fe變?yōu)関再加es的單詞樹葉半數(shù)自己黃，妻子拿刀去割糧；架后竄出一匹狼，就像小偷逃命忙。Don'tkeeppoisonsinthekitchen.bakingsodaknifen.scissorsn.saltn.poisonn.Becarefulwithfireandheat,oryoumaybeburnt.heatn.高溫；爐灶v.加熱burnv.燒傷；燃燒Canpeoplepreventcertainaccidents?Don’tuseelectricitywithyourwethand.What’sitfor?Itisusedtopreventpeoplefromslipping.三、作業(yè)1.Finishexercis