知識像燭光，能照亮一個人，也能照亮無數(shù)的人。--培根知識像燭光，能照亮一個人，也能照亮無數(shù)的人。--培根/知識像燭光，能照亮一個人，也能照亮無數(shù)的人。--培根一、it的歸納總結(jié)。教學(xué)（課堂）目標(biāo)：知識上，讓學(xué)生掌握一些重點(diǎn)詞匯短語，熟練運(yùn)用“it?！鼻楦猩?，讓同學(xué)們認(rèn)識到抽煙的害處并引導(dǎo)同學(xué)們積極勇敢面對生活和學(xué)習(xí)中的壓力，健康生活。能力上，學(xué)生在情景中運(yùn)用和自主總結(jié)it用法。教學(xué)重點(diǎn)：1.“it”做引導(dǎo)詞，（做形式主語代替不定式、動詞-ing或主語從句。）2．“it”做引導(dǎo)詞（做形式賓語代替不定式、動詞-ing或主語從句。）3.“it”在強(qiáng)調(diào)句中的重要作用Itis/was+被強(qiáng)調(diào)部分+that/who其它成分）四、課時安排一節(jié)課（40minutes）五、教學(xué)過程：Step1.GreetingsStep2.LeadinPlaythesong“Youare”andshowsomepicturestothestudents.Youheardabeautifulsongjustnow.Itisaboutthelovebetweenparentsandtheirkids.Everykidcametotheworldasanangel.But,lookatthisgirlinthepicture.Ijustwanttoask,“what’sthematterwithyou,myangel?”Step3.Wordsandphrases1.Brainstorming:Showsomepicturesaboutyouthproblems.Question:whataretheydoing?Whyso?Brainstormsomekeywords:smoke,cigarette,addictedto,stress,dueto,etc.2.Readandexplainsomenewwordsandphrasesforthestudents.3.(TaskII)Fillintheblankswithwordandphrasesgiven.Step4.Grammarlearning1.Readthepassageagainandfindouttheword“it”.Whatdoesthe“it”inthepassagestandfor?1)Whattheydon’trealizeishoweasyitistobecomeaddictedtosmoking.2)Itisthementaladdictionratherthanthephysicaleffectsthatmakesitreallyhardtoquitsmoking.2.Theuseof“it”1)“It”canbeusedtotalkabouttime,weather,season,anddistanceandsoon.=1\*GB3①Askthestudentstoshowtheirproject.=2\*GB3②Makeaconclusion.2)“It”canbeusedinthesubjectorobjectpositiontostandforinfinitive,-ingformoraclause.=1\*GB3①“It”structurecanbalancesentences.(Showapicture)=2\*GB3②Showsomesentencesandaskstudentstoanalyzethem.=3\*GB3③Takesomeexercisesstepbystep.Step5.DiscussionWhatshouldwedowhenwefeelstressed?1.Itiswonderful…2.Itisuseful…3.Ifindithelpful…4.Ibelieveitpossible…5.Itseems……Step6.CompetitionStep7.Summinguptheuseof“it”Askstudentstodoanotherproject.Payattention!Itisacreativejob.Chooseoneofthefollowingtasksandfinishit.1.Youcanwritedownsomesentenceswiththeword“it”andtheirexplanations.2.Youcanalsowritedownashortpassagewiththeword“it”andtheirexplanations.Step8.SummaryStep9.Homework1.Tryyourbesttofindmoresentencesof“it”structuresinyourtextbooks.2.ReadTheUseof“it”onP87-88.3.YourfriendJamesisaddictedtosmoking.Writealettertogivehimsomeadvice.用歌曲和圖片引入青少年問題的話題。根據(jù)圖片談?wù)撉嗌倌陠栴}，引出重點(diǎn)詞和短語。在句中處理個別難詞。在語篇中操練詞匯，深化青少年抽煙喝酒問題的話題,并為引出語法“it”的用法做鋪墊。分析上述短文中“it”的指代關(guān)系，初識“it”用法。由學(xué)生自主總結(jié)已學(xué)過的“it”用法。發(fā)揮了學(xué)生主體作用，培養(yǎng)了學(xué)生小組合作學(xué)習(xí)的能力還對英語語法學(xué)習(xí)充滿興趣。呈現(xiàn)較難的“it”用法。由易到難，用各種題型圍繞青少年抽煙話題進(jìn)行操練。知識呈現(xiàn)和操練上注意梯度的把握。內(nèi)容上進(jìn)一步深化主題。在情景中進(jìn)一步操練“it”結(jié)構(gòu)。在語境中鞏固“it”作形式主語和形式賓語的用法。并引導(dǎo)同學(xué)們面對生活和學(xué)習(xí)中的壓力時，要積極，樂觀用競賽形式進(jìn)行鞏固。由學(xué)生進(jìn)一步自主總結(jié)“it”用法。并鼓勵同學(xué)們在創(chuàng)作小文章，在寫作中運(yùn)用“