最新新课本新目标英语八年级上册Unit3教案名师优秀教案.docx
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最新新课本新目标英语八年级上册Unit3教案名师优秀教案.docx
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最新新课本新目标英语八年级上册Unit3教案名师优秀教案
新课本新目标英语八年级上册Unit3教案
Unit3I’mmoreoutgoingthanmysister.
SectionA1(1a-2d)
一、教学目标:
1)能掌握以下单词:
outgoing,better,loudly,quietly,hard-working,competition,
fantastic,which,clearly,win
能掌握以下句型:
?
TinaistallerthanTara.
?
SamhaslongerhairthanTom.
?
ShealsosingsmoreloudlythanTara.
2)能掌握以下语法:
?
形容词或副词比较级形式的构成。
?
表示两者进行比较的句式结构。
3)能对人物的外表进行描绘,个性进行比较。
二、教学重难点
1.教学重点:
1)形容词或副词比较级形式的构成。
2)表示两者进行比较的句式结构。
2.教学难点:
HehasshorterhairthanSam.
IsTomsmarterthanTim?
ShealsosingsmoreloudlythanTara.
三、教学过程
?
.Lead-in
1.AskSstowritedownasmanyadj.aboutpeopleaspossible.Checktheadj.Sswrite
andwecangroupthemintosomepairs,like:
[SectionA1a]
tall---short;thin---heavy,longhair---shorthair,calm---wild…
GiveSsanexamplebycomparingOldHenryandSantaClaus.
e.g.SantaClausisolderthanHenry.HenryistallerthanSantaClaus.
HenryisyoungerthanSantaClaus.SantaClausisyoungerthanHenry.
?
.Presentation
AskSstoseethepixaboutapplesandpearstoseethedifferences.Thencomparesomeoftheirthingswitheachother.
e.g.Theapplesarebiggerthanthepears.
Thepearsaremoredeliciousthantheapples.
SummarizetheComparatives.Groupcompetition.
A+be(V)+比较级+than+B.
?
.Game(Iandmydeskmate)
AskSstocomparewiththeirpartnersandfindoutthedifferences.
e.g.Sheisheavierthanme.Iammoreoutgoingthanher.
Shegetsupearlierthanme.Irunfasterthanher.?
.Listening
Thenlistentotherecording.AskSstonumberthetwins.
Checktheanswers.
?
.Pairwork
Pointoutthesampleconversationinactivity1c.
Say,nowworkwithapartner.Makeyourownconversationaboutthetwins.Askseveralpairstosayoneormoreoftheirconversations.?
.Listening
1.Workon2a:
Pointoutthetwocolumnsandreadtheheadings:
-er,-ierandmore.Thenpointoutthewordsinthebox.Readthem.
Say,nowlistenandwritethe–erand–ierwordsinthefirstcolumnandthewordsthatusemoreinthesecondcolumn.
Playtherecordingandchecktheanswers.
2.Workon2b.
PointoutthepictureandthetwoboxeswiththeheadingsTinaisandTarais.Say,listentotherecording.Writewordintheboxes.Thewordsarefromthelistinactivity2a.
Playtherecordingandchecktheanswers.
?
.Pairwork
1.Pointoutthechartinactivity2c.Say,Makeyourownconversationsaccordingtothe
elativedeviationislessthan0.2%.4,repeatedatleastthreetimes,andcalledfordeterminationofther-determinationofcalibrationshouldbeparallel3?
points:
dsolutionconcentration.Inordertoimprovetheaccuracyofcalibration,calibrationshouldpayattentiontothefollowing1,typicallyaccordingtothecomponentstobetestedtoselecttheheightofthesizeofstandar-1mol•L-1-rangeof0.01mol•Ltionaredeterminedbycalibrationofthemethod.ConstantcomponentinthedeterminationofstandardsolutionconcentrationsolulityofanhydrousNa2CO3,calculatetheexactconcentrationoftheHClsolution.Mostaccurateconcentrationsofthestandardmaterialuntilbothquantitativeresponsefully,andthenconsumedinthetitrationofaqueoussolutionofHClvolumeandqua1indilutesolution,andthenusetheanhydrousNa2CO3benchmarksolutiontitrationaccuratelyweighthe-ol•L1HClstandardsolution,firstwithacertainamountofconcentratedHCldilutedwithwater,mixedconcentrationisabout0.1m-tionof0.1mol•Ltermineitsexactconcentration.Thisdeterminesitsexactconcentrationiscalledcalibration.Forexample,forthepreparaItAAAASAClosetothedesiredsolutionwasprepared,andthenusethereferencematerial(oranothermaterialstandard)tode2ent.The"quantity"conceptstringntfigures;thepreparedsolutionchoosewhatkindofvessel.Thataccurate,itshouldbeverystricttolerancescanbelessconcentrationshouldbedeterminedonthebalanceattheleveloftheweighing;recordshouldbewrittentoseveralsignificationloricacidandthreevolumesofwaterandmix.Preparationofsolution,accordingtotherequirementsontheaccuracyofsoluoriginalconcentratedH2SO4volume1volume,mixwith1volumeofwater.Andas1:
3HCl,theoriginalvolume1volumehydrochtheandpreservationmethodsof1:
1(or1+1),1:
2(1+2)volumeisexpressedasconcentration.Forexample,1:
1solutionofH2SO4,arecalculatedusingvolumetricflasks,pipettes,buretsaccurateoperation,notsloppy.(B)thegeneralsolutionpreparationationance,accuratetofourdigitsafterthedecimalpoint.Volumecalibrationsolution,ifitweretoparticipateintheconcentrcalibrationsolution,everythingisverystrictandaccurate.Weighingstandardsubstancesrequirestheuseofanalyticalbalessoflidreagentsweighinthescales,addthesolvent(water),graduatedcylinderormeasuri
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