八年级英语下册 Lesson25 Lets Do an Experiment教案 冀教版.docx
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八年级英语下册Lesson25LetsDoanExperiment教案冀教版
Lesson25:
Let’sDoanExperiment!
ØStep1:
复习巩固、激情导入
复习:
提问unit3重点词组和句型
导入:
Doyouliketodoexperiment?
Whatexperimenthaveyoudone?
ØStep2:
出示目标、明确任务
1.牢记本课黑体词汇:
science/experiment/fill/prove/scientific/method等;
2.能分角色表演对话;
3.背诵重点句子1-5,并灵活运用相关知识点。
ØStep3:
自主学习、合作探究
任务一:
限时5分钟,熟读所有词汇,牢记黑体词汇
任务二:
熟读对话,把握其意,画出不理解处,同桌之间交流
任务三:
背诵重点句子,并自学知识点,画出不理解处,同桌之间交流
1.Ifillajarwithwater.
2.Iturnthejarupsidedown.
3.I'msurethefloorwon'tgetwet.
4.Wecanprovewho'sright.
5.We'lldotheexperimentandobservewhatwillhappen.
ØStep4:
师生互动、展示提升
互动一:
单词记忆比赛
互动二:
对话熟读接力赛
互动三:
知识点展示大比拼
✩知识点一:
Ifillajarwithwater.
fill...with...意为“用...装满...”
befilledwith...=befullof...意为“充满...”
fillin...意为“填上...;填充...”
Eg:
Onhearingthenews,hereyesarefilledwithtears.
Theyfilledtheholewithwater.
Fillintheblanks.
✩知识点二:
Iturnthejarupsidedown.
Turn…upsidedown意为“把……翻转/倒过来”
upsidedown意为“正面朝下”
rightsideup意为“正面朝上”
Eg:
Thatpictureisupsidedown.
Youholdthebookupsidedown.
✩知识点三:
I'msurethefloorwon'tgetwet.
besure(that)从句,意为“肯定……,确定……”主句的主语必须是人
否定形式是benotsure+疑问词引导的从句.
Eg:
Tomissurethathewillwinthegame.
Tomisnotsurewhetherhecanwinthegame.
I'mnotsurewhenhe'llcomehere.
✩知识点四:
Wecanprovewho'sright.
prove是及物动词,意为“证明,证实”
常用于以下结构:
provesth.(tosb.);prove(tosb.)that...;prove...(tobe)+adj/n.
Eg:
Thefacthasprovedtheman'shonestytousall.
=Thefacthasprovedtousallthatthemanishonest.
=Thefacthasprovedtheman(tobe)honest.
prove也可以作不及物动词,意为吧“证明\表明(自己)是...”后跟形容词或名词.
Eg:
Mytheorywillproverightsomeday.
Duringthetrip,heprovedamanwithastrongwill.
✩知识点五:
We'lldotheexperimentandobservewhatwillhappen.
(1)observe是动词,意为“观察”
observesb.dosth.
observesb.doingsth.
用法同see/watch/hear等
Eg:
Iobservedherdance.
WhenIpassedbythegrass,Iobservedhimwalking.
(2)happenvi意为“发生”
【固定短语】sthhappenstosb(无被动语态)
Happentodosth
Eg:
Whathashappenedtoyou?
Ihappenedtomeetanoldfriendyesterday.
ØStep5:
巩固练习、检测验收
教学反思:
课时32
Lesson26:
OneWetDanny?
ØStep1:
复习巩固、激情导入
复习:
提问Lesson25知识点1-5
导入:
WhyisDannygoingtowearhisswimsuit?
ØStep2:
出示目标、明确任务
1.牢记本课黑体词汇:
force等;
2.能分角色表演对话;
3.背诵重点句子1-4,并灵活运用相关知识点。
ØStep3:
自主学习、合作探究
任务一:
限时2分钟,熟读所有词汇,牢记黑体词汇
任务二:
熟读对话,把握其意,画出不理解处,同桌之间交流
任务三:
背诵重点句子,并自学知识点,画出不理解处,同桌之间交流
1.Brian,JennyandDannyaretalkingabouttheirexperiment.
2.Theforceoftheairwillkeepthewaterinthejar.
3.Brianwillturnthejarover.
4.Iwillasktheclasstomakeobservationsandguesswhatwillhappen.
ØStep4:
师生互动、展示提升
互动一:
单词记忆比赛
互动二:
能分角色表演对话
互动三:
知识点展示大比拼
✩知识点一:
Brian,JennyandDannyaretalkingabouttheirexperiment.
【固定词组】talkabout意为“谈论”
talktosb意为“对某人说”
talkwithsb意为“和某人谈论”
知识点二:
Theforceoftheairwillkeepthewaterinthejar.
Forcen力量、武力、暴力
Eg:
Theforceofhumanisgreat.
V迫使、强迫
【固定词组】forcesbtodosth=forcesbintodoingsth意为“强迫某人做某事”
Eg:
Nobodycanforcemetodoanything.
✩知识点三:
Brianwillturnthejarover.
【固定词组】turnover意为“翻过来”(over为副词)
Over短语:
comeover(to)…到……来
Goover复习
Getover恢复
Lookover检查
Eg:
WedohopethepeopleinSichuanwillsoongetovertheirtrouble.
✩知识点四:
Iwillasktheclasstomakeobservationsandguesswhatwillhappen.
【固定词组】
(1)Asksb(not)todosth要求某人(不要)做某事
类似用法:
tell/invite/want/teach/force
(2)makeobservations意为“观察”
ØStep5:
巩固练习、检测验收
教学反思:
课时33
Lesson27:
Dannythe“Dry-o-Saur”!
ØStep1:
复习巩固、激情导入
复习:
提问Lesson26知识点1-4
导入:
Intheexperiment,willDannygetwet?
ØStep2:
出示目标、明确任务
1.牢记本课词汇:
surprised/examine/discover/explain/enough/liquid/solid/
2.spoon/add/mix/pour;
3.熟读课文,把握其意;
4.背诵重点句子1-4,并灵活运用相关知识点。
ØStep3:
自主学习、合作探究
任务一:
限时1分钟,牢记词汇
任务二:
熟读两封邮件,把握其意,画出不理解处,同桌之间交流
任务三:
背诵重点句子,并自学知识点,画出不理解处,同桌之间交流
1.Next,Brianwilltakehishandoffthecardboard.
2.Theforceisstrongenoughtoholdthewater.
3.AirisstrongerthanIthought!
4.Puteightspoonfulsofcornstarchintothebowl.
ØStep4:
师生互动、展示提升
互动一:
熟读邮件比赛
互动二:
课文熟读接力赛
互动三:
知识点展示大比拼
✩知识点一:
Next,Brianwilltakehishandoffthecardboard.
takesth.offsth.意为“使某物离开或脱离...”
Eg:
Wouldyoumindtakingyourfootoffmyhand?
takeoff还意为“起飞;脱下;匆忙离去”
Eg:
Theplanetookoffat7a.m.
Takeoffyourshoes,please.
Hetookoffforthestationinahurry.
✩知识点二:
Theforceisstrongenoughtoholdthewater.
Adj/adv+enoughtodosth意为“是足够...以至于能做某事”
Eg:
Theboyisoldenoughtogotoschool.
=Theboyissooldthathecangotoschool.
=Heissuchanoldboythathecangotoschool.
enough作副词,要放在被修饰的形容词和副词之后;
作形容词,通常放在被修饰的名词前或之后.
Eg:
Thishallislargeenoughtoholdtwothousandpeople.
Hewalksfastenoughtobehereintime.
Hedoesn'thaveenoughmoneytogofortraveling.
I'msoory,butIhaven'tenoughtimetodothejob.
✩知识点三:
AirisstrongerthanIthought!
than可作连词或介词,用于引入比较级的后半部分,表示比...;
Eg:
Sheisabetterplayerthanshewaslastyear.
Heistallerthanme.HegetsupearlierthanI(do).
ratherthan意思是宁愿...,不愿...;与其...不如...
Eg:
Iwouldratherstayathomethangoout.
✩知识点四:
Puteightspoonfulsofcornstarchintothebowl.
spoonful是可数名词,意思是一勺的量.
Eg:
aspoonfulofsugar.
类似的还有twocupfulsofmilk;afewmouthfulsoftea;ahandfulofflowers
ØStep5:
巩固练习、检测验收
教学反思:
课时34
Lesson28:
FillMyPlate
ØStep1:
复习巩固、激情导入
复习:
提问Lesson27知识点1-4
导入:
Doyoulikethesong?
ØStep2:
出示目标、明确任务
1.牢记本课黑体词汇:
plate/taste/empty/full等;
2.听录音1-3遍,能跟唱歌曲;
3.背诵重点句子1-2,并灵活运用相关知识点。
ØStep3:
自主学习、合作探究
任务一:
限时3分钟,熟读所有词汇,牢记黑体词汇
任务二:
听录音,跟唱歌曲,比一比,赛一赛,看哪组唱的最好
任务三:
背诵重点句子,并自学知识点,画出不理解处,同桌之间交流
1.Thattastessogreat.
2.AndIwilleatuntilmyplateisempty.
ØStep4:
师生互动、展示提升
互动一:
单词记忆比赛
互动二:
跟唱歌曲比赛
互动三:
知识点展示大比拼
✩知识点一:
Thattastessogreat.
Taste
(1)作系动词,后接形容词作表语,意为“尝起来……”
Eg:
Themeattastesgood.
(2)做实义动词,意为“品尝、体验”
Eg:
Wouldyouliketotastethecheese?
Imademyself.
✩知识点二:
AndIwilleatuntilmyplateisempty.
Empty
(1)a空的
Eg:
Ineedanemptybox.
(2)v倒空
Eg:
Ihaveemptiedadrawerforyoutouse.
ØStep5:
巩固练习、检测验收
教学反思:
课时35
Lesson29:
AnEasterEggHunt
ØStep1:
复习巩固、激情导入
复习:
唱Lesson28歌曲
导入:
WhenisEaster,doyouknow?
AndhowdopeoplecelebrateEaster?
ØStep2:
出示目标、明确任务
1.牢记本课黑体词汇:
basket/hide/hen等;
2.熟读课文,把握其意;
3.背诵重点句子1-3,并灵活运用相关知识点。
ØStep3:
自主学习、合作探究
任务一:
限时3分钟,熟读所有词汇,牢记黑体词汇
任务二:
熟读课文,把握其意,画出不理解处,同桌之间交流
任务三:
背诵重点句子,并自学知识点,画出不理解处,同桌之间交流
1.Whenyou“hunt”forsth,youwillfindit!
2.Debbiewillhavefunlookingforthem.
3.Nowmybasketisfullofeggs.
ØStep4:
师生互动、展示提升
互动一:
单词记忆比赛
互动二:
课文熟读接力赛
互动三:
知识点展示大比拼
✩知识点一:
Whenyou“hunt”forsth,youwillfindit!
【固定句型】find,lookfor,findout,huntfor
find强调找的结果意为“找到”
Eg:
Hefoundhislostpen.
lookfor强调动作的过程意为“寻找”
Eg:
Heislookingforhislostpen.
findout强调(经过一番努力之后)找到...;查明....
Eg:
Atlast,theyfoundoutwhostolethebike.
huntforsb.\sth.意为“寻找某人或某物”与lookfor同义.
Eg:
Thepolicearehuntingforthethief.
✩知识点二:
Debbiewillhavefunlookingforthem.
havefun相当于enjoyoneself意为“玩得高兴,过得愉快”
Eg:
Wehadlotsoffunonthesportsgroundtoday.
=Weenjoyedourselvesverymuchonthesportsgroundtoday.
havefundoingsth.表示做某事有乐趣.
Itis(not)funtodo\doingsth.
=Thereismuch\nofunindoingsth.意为“做...有(无)乐趣”
Eg:
Itisfuntocookamealmyself.
=There'smuchfunincookingamealmyself.
Thereisnotmuchfuningoingtoapartyalone.
=It'snotfuntogotoapartyalong.
✩知识点三:
Nowmybasketisfullofeggs.
befullof...意为“充满……”=befilledwith...
Eg:
Thebusisfullofpeople.=Thebusisfilledwithpeople.
ØStep5:
巩固练习、检测验收
教学反思:
课时36
Lesson30:
KeeptheCandleBurning!
ØStep1:
复习巩固、激情导入
复习:
提问Lesson29知识点1-3
导入:
Doyouthinkscienceisinteresting?
Whyorwhynot?
ØStep2:
出示目标、明确任务
1.牢记本课黑体词汇:
match/light/burn/useup等;
2.熟读课文,把握其意;
3.背诵重点句子1-4,并灵活运用相关知识点。
ØStep3:
自主学习、合作探究
任务一:
限时5分钟,熟读所有词汇,牢记黑体词汇
任务二:
熟读课文,把握其意,画出不理解处,同桌之间交流
任务三:
背诵重点句子,并自学知识点,画出不理解处,同桌之间交流
1.Fillthedishhalffullofwater.
2.Tomakeacandleburn,you"light"it.
3.Asthecandleburns,itusesupoxygenintheair.
4.Thereisaboutone-fifthoxygenintheair,sothewaterrisesandfillsaboutone-fifthofthejar.
1.Thecandleholderis"holding"thecandle.
ØStep4:
师生互动、展示提升
互动一:
单词记忆比赛
互动二:
课文熟读接力赛
互动三:
知识点展示大比拼
✩知识点一:
Fillthedishhalffullofwater.
Half
(1)副词意为“部分地,一半地,差不多”
Eg:
Thebottleisonlyhalffull.
(2)也可作形容词,名词,意为“半个的,一半的,一半”
Eg:
halfayear=ahalfyear;
halfanhour=ahalfhour;
Halfofthemarealreadyhere.
Twohalvesmakeawhole..
✩知识点二:
Tomakeacandleburn,you"light"it.
Make/let/havesth./sb.dosth.意为“使某物或某人做某事”
Eg:
Letthecandleburnfortwoorthreeminutes.
✩知识点三:
Asthecandleburns,itusesupoxygenintheair.
1)as作连词的各种用法
as...as...结构中第二个as是连词,它往往连接一个不完整的句子,表示比较,意思是和...一样...;像...一样....”
Eg:
Johnisashealthyashissister.
表示方式,意为“像,按照,如同.”
Eg:
RunasIdo.Leaveitasitis.
表示时间,意为“当...的时候,一边...一边...,随着”
Eg:
Shesangassheworked.Isawhimashewasgettingoffthebus.Youwillgrowwiserasyougrowolder.
表示原因,意为“因为”
Eg:
Asyouaretired,youbadbetterrest.
表示让步,意为“虽然,尽管”
Eg:
Richasheis,heisnothappy.MuchasIlikeit,Iwillnotbuyit.
2)usesth.up意为“用尽...,利用...”
Eg:
Sheusedupthechickenbonestomakesoup.
Whenthecandlestopsburning,ithasusedupalltheoxygenintheair.
✩知识点四:
Thereisaboutone-fifthoxygenintheair,sothewaterrisesandfillsaboutone-fifthofthejar.
分数的表达形式:
分子用基数词,分母用序数词,分子大于1,分母加s.
概括为口诀:
分子基,分母序.分子>1,分母加s.”
Eg:
1/2=one/ahalf=onesecond=one-second;
1/3=onethird=one-third;2/3=twothirds=two-thirds;
1/4=one/aquarter=one-quarter;
3/4=threequarters=three-quarters;3/5=threefifths=three-fifths;
✩知识点五:
Thecandleholderis"holding"thecandle.
hold为动词意为“拿,抓,握,抱,保持,容纳”
Eg:
ShallIholdyourbag?
Heheldabookinhishand.
Heheldhisheadup.
Idon'tthinkthecarwillholdyouall.
ØStep5:
巩固练习、检测验收
教学反思:
课时37
Lesson31:
SurpriseYourFriends!
Ø