作为一位不辞辛劳的人民教师，常常要根据教学需要编写教案，教案有利于教学水平的提高，有助于教研活动的开展。那么教案应该怎么制定才合适呢？
unit1leon3
partaletssay,letschantpartcculture
teachingaims:
abletolisten,say,recognizethewords:apple,ant,boy,bag,coke,abletolisten,say,readandwritethesethreeletters:aa;bb;cc
hthechantreviewthelettersofabc,trainasenseofgrouppoints
difficultpoints:
readtheletters:bigletterc,smallletterc;writedownthemcorrectlyandngpreparation:
cards,somewordpictures,wordcards:appleboyeraserantcrayonbodyheadcakecokecoffeebagball
2.alittleblackboardwithfour-lineformatandaingfortheblackboard:
pandabeavereaglekangaroo(pictures)
chinacanadaamericaaustralia(words)
teachingsteps:
–up
atalk
t:fromhangzhou.s1:hello!im...imfromhangzhou,too.t:nicetomeetyou.s:nicetomeetyou,too.t:lets
s:great!
t:watchout!(tthrowstheball.)
s:oh,asimilardialoguewithyourtation.1.1)t:today,wewilllearnyouknowlettersjustasa,b,c……theyarethemeaningofletters
s:字母。
t:great!aisthefirstletter.(tshowslettera.)
t:aa↗↘s:aa↗↘
t:thisisbiglettera.大写字母a。
t:biglettera.s:biglettera.t:letsmakeabiglettera.(withthehands)
runtwotrains:biglettera.(withthehands)
t:thisissmalllettera.t:smallletteras:smalllettera.t:lookatthisgirlsasmalllettera.小a,小a,小翘辫。
runtwotrains:biglettera,smalllettera.2).tdrawsanapple:whatsthis
s:itsanapple.tdrawsanantbesidetheapple:whatsthis
s:itsanant.t:aforant,//,//,//.aforapple,//,//,//.bb,cclikeattentiontothepronunciationofrighthandtomakeac.bforboy,/b/,/b/,/b/.bforbag,/b/,/b/,/b/.cforcoke,/k/,/k/,/k/.cforcoffee,/k/,/k/,/k/.step:findouttheletterswevejustboyeraserantcrayonbodyheadcakecokecoffeebag
ball
readas:apple,no.1smalllettera.2.1)t:youresocanread,letswritethemattheblackboard.t:first,letswritedownbigletter,two,,letstrymeyourfinger.s:myfinger.tss:one,two,three.tteachesthewritingofsmalllettera.2)t:everyonehashisisashome
hereitis.(tpointsatthefour-lineformat.)
t:thisislettersisthefirstthesecondfloorandthethirdlettersalivesinthesecondandthirdwritedownmeyourfinger.s:myfinger.t
ss:one,two,three.tteachesthewritingofsmallletterainthefour-linethemonyourexercisethewritingofbb,chant.1)readaftert.2)saywiththetape.3)saybye.
twritesdown:3.8
t:march8thiswomens，妇女节。
t:onthatday,youshouldsay“happywomensday”toyouralsocanpouracupoftea,thensay“havesometea,mom.”
tsactlikemotherandson/daughter.s:ein,please.s:happywomensday!
t:,sitdown,sometea.t:thankdear.1)-kpletethewritingoflettersandexerciseontheactivitybook.2)makelettercardsofitover:
gooodmoring,imgladtointerpretmyleonleonplaniamgoingtotalkaboutispartaletslearnofunit1pepprimaryenglishbook7.iwillexplainhowtoteachandthereasonfordoingthisfromfollowingaspects.ⅰanalysisoftheteachingcontent.ⅱwaysofteachingandlearning.ⅲteachingprocedures
ⅳblackboarddesign
vaement
nowletsfocusontheanalysisofteachingcanbespanidedinto3partsasfollowed:thestatusandthefunction,theteachingobjectives,themainpointsanddifficultpoints,illtalkaboutitonebyleonisthefirstleonofunit1,includestwoparts:letslearnandletssection1,itmainlydealswiththesekeyphrases:onfoot,bybike,bybus,bytrain,byinsection2,itprovidesagameforthesstoprastisethepatterns:howdoyougoto…andtheanswer:igo…by../onstudentshavealreadyknownsomevehiclesinthedailynotdifficultforthemtounderstandandusethesestudentscanlearnitwell,itwillhelpstudentstolearntherestofthis,isetthefollowingaims:
thefirstislanguageobjeakesurethatstudentscanread,recognizeandusethesekeyphrases:onfoot,bybike,bybus,bytrainnextisabilityobjectives
(1)todevelopssabilitiesoflisteningandspeaking.(2)totrainthessabilityofworkinginobjectives
(1)tohelpstudentsknowsomevehiclesandcomprehendthetrafficrules
(2)tofosterssconsciousneofgoodco-operationandpropermainpointsanddifficultpointsaboutthisleonis:
(1)tomakesurethatsscanusethesekeyphrasescorrectlyandskillfully.(2)toenablesstostudyingroupsandco-operateskillfully.(3)todevelopssinterestinultpoints
tohelpthessaskandanswerthequestion“howdoyougoto…
partⅱwaysofteachingandlearning
asweallknow:themaininstructionalaimsoflearningenglishinprimaryschoolistocultivatepupilsbasicabilitiesoflisteningandspeakingandtheirgoodsenseoftheenglishinthisleonillmainlyuse“task-based”teachingistosay,iwillletthesslearninrealsituations,finishataskbymakingasurvey”howdoyougotoschool”tohelpsstogetabetterunderstandingofthekeyphrases.iwillarrangetheseactivities:gueinggame,finishingasurveyandhavingainthisleonarecorder,cai,willbeⅲteachingprocedures
illfinishthisleoninfive1lead--inactivities
iwillbeginmyclawithdrawingandgueinggame,justlikethis:ishowstudentssomevehiclessuchasbike,bus,jeepwhichtheylearnedbeforebystickfiguresandaskthemguewhatse:itisimportanttoformabetterenglishlearningsurroundingforthessbygueingatthesametimeitprovidessituationstoreviewlearnedknowledgeforthenext2prestentation
nowillmainlytalkaboutthisstep.1、firstthereisafreetalkbetweentandexample:ishowmanypicturesofbeautifulcitiesandaskstudentssomequestions,suchasdoyoulikethiscitywheredoyouwanttogoandhelpsstoanswerthemwithbytrain,byplane,bytheway,ishowthepictureofaschool,andsay“igotoschioolbybus”,ssreadthistheactionsandaskhowdoyougotoschool,showmanypicturesoftoolssuchas,onfootbybike,bybustohelpstudentsanswermyquestiononebypresentthekeystructuresonebyoneismucheasierforthesstolearnandgraspthemeanings.2withthehelpofthecaiisetasituationtohelpssunderstandthewayofusingthesekeyphrases:
aboyiscoming,whoisgoingtosays:igotoschoolby…thenplaythesoundsofbus,bikeaskstudentstolistencarefullyandtell“igotoschoolby…accordingtothedifferentsounds,bytheway,ipresentanothernewphrases:bysubway
purpose:makessusethesenewphraseswithsentencestructures,tohelpssusethelanguageinareal3practise
3iordertomakeeverystudentreadthesenewphrasescorrectly,idesignadrillinthisstep,ishowcardsassoonaspoible,studentsshouldreadthewordsquicklyandspelliaskhowdoyougotoschoolstudentsanswerigoto......alsoiwillquickenthespeedtopurposeistodrawthewholestudentsattentiontothespellingofthewords
4afterthis,iasksstodoletsplay
inuseplacescardsandvehiclecards,askandanswer:howdoyougoto…igoto…by…”
5,ifsscanaskandanswerexpertly,iwillaskthemtomakeashortpurposeofthisistohelpstudentstolearnthosesentensesthroughaturesituationandmakethedialoguesinordertocheckifsscanuethesekeyprases、sentencesstructuresskillfully
step4consolidation
letstudentsdoasurveyabouthowdoyougotoschoolandthetablelikethis:writedownnamesandtoolsanothersschoose
task-basedteachingmethodisusedheretodevelopssabilityofcommunicationandalsotheirabilityofco-operationwillbewell5homework
askstudentstocollectotherkindsoftransporttoolsthroughthelibrary,purposeofthisistostimulatetheinterestoflearningenglishandtowidethestudentsknowledge
step6blackboarddesign
myblackboarddesignlikethis:ontheleftishowthephrases:onfoot,bybus.......ontherighttherearemanysentences:howdoyougotoschooligoto......step7aement
duetothestudentsage,imakeeverystudentsworkinclathroughmanyactivitiesinordertostimulatethestudentsinterestandprovidetheyawidethinkingroom.imakestudentslearnthisleonverywellthroughdesiringscenestatues
thatsall,thankyouforyourlistening!
unit1howdoyougothere
periodone
teachingcontents:partaletslearn
letsplay
enablethestudentstomasterthefourskillsphrases:onfoot，bybike，by
bus，bytrain,byplane，byship，bysubway
enablethestudentstoaskaboutthewaysoftrafficwiththefollowing
sentencepatterns:howdoyougotoschoolorhowdoyougoto
canada…‖andanswerwith―igoby…‖
teachingasterthefourskillsphrases:bytrain,byplane,bysubway,byship,bybike，onfoot
teachingdifficulty:
todiffer―subway‖from―train‖
teachingmunicativeapproach
teachingaids:
cards
recorderandtape
-mediaplayer
teachingprocedure:
1.(warm-up)
greeting:goodmorning,cla!
gladtomeetyouareyou
whatdayisitwhatsthedate
whatstheweatherliketoday
tation
showapictureofbus
t:whatsthiss:itsabus.t:igotoschoolbydoyougotoschool(showapictureofbikeandhelpastudenttoanswerwith―igotoschoolbybike.‖)
(inthesameways)teach―bysubway‖and―bytrain‖―byship‖―byplane‖―onfoot‖.subway:itsanundergroundrailwayinatravelsverycanseesubwayinhongkong,beijing,shanghai,gongzhou…
explainthedifferencesbetweensubwayandtrain
payattentiontothepre.―by‖―on‖
games
askonestothefrontandstickthewordcardsnexttothephraseswrittenonthebbwhentreadthenewphrasesquicklyandtheotherssputuptheironewhoreflectfastestandcorrectlyisthetothetapeofpartaletslearnandfollowattentiontothetoneandpronunciation
ce:letsplay
toffermanyplaces(thedaustraliahongkongshanghaiguangzhouthemoon…)andtrafficways(bycar/taxi/bus…onfoot)sspracticewithaboveplacesandwaysinpairs:
a:howdoyougotoschool
b:igotoschoolonagethesstomakeupasmanysentencesastheyngcompetition
spanidetheclaintotowthepicturesoftraffictoolsandasksstospellthefirstonewhoputsuphandgetsthechancetogroupspelloutmorephrasesaretherk
copythenewwordsandphrases
finishpage1oftheab
小学全英文教案doc
【篇1：小学英语全英教案】
teachingplan----外******teacher:*****
content:leon14unit7colors(2)
①thetextofleon14istalkaboutcolors.②understandandspeakouttheninenewwords:blue,pink,black,white,have,pet,it,rabbit.③studythenewsentences:“whatcolorisit”“ihavea…”“it’s…”(theansweriscolor)①masterthenewwords.②makesentenceswiththenewwords.③letthestudentstothecolorofinterrelatedinquiriesandresponseshaveaclearunderstanding.④developstudents’imaginations.①speakoutthenewwordsandmakesentencesinrighttone.②strethe“a”isimportanttothesentence“ihavea….”manystudentsoftenmi,tape,somestars(toencouragestudents)step1:armingup
①introducemyselfthentogreet.②letallstudentsstandupandchantapoemwithaction.(thepoemis“stopwaitgo”,thisisthecontentoflastcla).step2:reviewingandleadingin
①showfourcardsof“red,yellow,green,orange”ontheblackboardthenletstudentsreadit.②teacherwantstoplayagamecalled“whereisit.”theruleofgameshowsonppt(对上节课单词的检测)
③afterreviewingthewords,teacheraskstudentaquestion:therearemanycolorsinourlife,nowwhocantrytosaytheothercolors
④teachershowthefourcardsof“blue”,“pink,”“black,”“white”onthethemfollowteacherandletstudentsshowtheirfingerstospellthem.⑤showthepptabouttheletstudentstalkaboutthecolorsthatwecanseeinourlife.⑥askanotherquestion:“nowmostofpeoplefedanimal,whattheanimalcalled⑦teachsaytherightanswerandshowanothercardof“pet”。studentsreaditfollowteacher.⑧showpptabout“rabbit”ontheblackboardandletstudentreadit.①firstly,listentothetapeaboutthenewleon.②putthreecardsof“it”,“have”,“color”andletstudentsreadfollowteacher.③secondly,openthebookonpage65andreadthetexttogether.④thirdlyaskstudentsread.⑤underlinethestreandtranslatethedialogue.⑥strethesentenceof“whatcolorisit”“ihavea….”andtheanswerof“it’s….”(theanswermustaboutcolor)step4:setupsituation
①showthepptaboutdifferentcolors’thingsandasksomestudenttoact.②askmorestudentstoact.③atlast,wholeclareadthetextonce5:summary
today,welearnsomebasicknowledgeofcolors.ihopeyoucanhaveaconsciousneabouthavetoreview,recitewordsand
doto6:homework
《unit2colours》教案
一、教学
能正确把握表示颜色的单词。
二、教学重点、难点
能正确把握表示颜色的单词。三、
颜色纸或各种实物、单词卡片
四、教学过程step1revision
1.教师出第一课时的三个句型认读。
2.t:what’sthis
s:it’sabook.t:whatarethese:books.t:howmanybookss:
t:isitblues:yes.t:isitreds:no.继续换几种物品提问。
3.出示第二课时的句型订读。step2presentation
1.教师拿出红、绿两种颜色纸：whatcolourisit
复习巩固red/blue,并且认读。
2.教师拿出黄色纸：isitredisitblue教学yellow。教师拿出一片叶子教学green
教师拿出一个自制的红绿灯教学一首小诗：red,redstop;yellowyellowwait;
greengreengogogo!
3.tshowanorange:what’sthisit’sancolourisitit’sorange.t:orangeisapeach:whatcolourisitit’spink.教学粉红色。
achocolate:whatcolourisitit’sbrown.教学棕色。agrape:whatcolourisitit’spurple.教学紫色。togetherstep3consolidation
tothetape,pointandread.2.教师拿着各种颜色纸，让学生说英语。
agame:规则：将各种颜色纸放入一个口袋内，让他们猜一猜摸到的东西是什么颜色的，猜对的小朋友奖励。together5.让小朋友在教室里找一些颜色。step4homework
readthenewwords.《weloveanimals》教案
一、教学目标1.知识目标
（1）能听、说、读、写本单元的动物类单词。
（2）进一步巩固句型：doyoulike．．．？yes，ido．／no，idont．以及ilike．．．和idontlike．．．2.能力目标
能够用几句连贯的英文向别人介绍自己的动物朋友以及它的特征。3.情感目标
使学生认识到人与动物之间的亲密友好的关系，从而树立应该保护自然、爱护动物的意识。
二、教学重点
能够听、说、读、写本课的动物类单词。
三、教学难点
较熟练地在情景中运用几句连贯英文向别人介绍自己的动物朋友。
四、教学准备
多媒体课件、动物实物、若干动物名片。
五、学情分析
学生学习剑桥英语已有一年半之久，他们学习英语的兴趣浓厚，已具备交流简单个人信息的能力。活泼爱玩，好表现自己是他们的天性。weloveanimals这一单元的主题是他们既熟悉又喜爱的动物，该课中的大部分动物单词学生已经学过，句型学生已熟练掌握，所以说学习这一课对于他们来说是件轻松愉快的事情。
六、教学过程gin
t：justnow，wewatchedthelionking，doyoulikeanimals？whatcanyousee？whichanimalsdoyoulike？doyoulikepanda？
-taskpreparation
（1）boysandgirls，weareintheforestnow，letsdosomeexercises．listenandact．handsup．handsdown．actlikeadog／cat／monkey．flylikeabird．swimlikeafish．jumplikearabbit．runlikeahorse．walklikeanelephant．
（2）caishowspicturesoffouranimalstails．t：lookandgue．whatanimalsarethey？
s：itsadog／anelephant／ahorse／amonkey．
（3）caishowseightphotosofanimals．t：lookandsay．whatdoyoulike？s：ilikesheep．．．
（4）letschant．saythechantwitht．
ilikesheep．ilikegoats．ilikehorses．ilikedogs．ilikechicks．ilikeducks．ilikecows．ilikecats．
（5）caishowsabigappletree．
t：nowletsplayagame．therearemanyapplesonthetree，andeachapplehasapictureofananimalinbackofit．illcalloneofyoutopickanapplethenwritedownthiswordontheblackboard．ifitisright，illgiveyouasmilingface．
（6）game：findfriends．
①giveeverysacard．
②tgivesamodel．
sa：doyoulikeelephants？
sb：no，idontlikeelephants．sa：doyoulikeelephants？sb：yes，ilikeelephants．sa：werefriends．
③freetalk．
④checkitup．
sa：werefriendsbecausewelikeelephants．-taskactivities
（1）t：doyouknowwhichanimalilikebest？canyougue？t：（showthetoygiraffeandgivethereasons．）giraffeismyfavouriteanimal．itisverypretty．itsverytall．ithasgotasmallhead，alongneckandasmalltail．ilikegiraffes．doyoulikegiraffes？
s1：yes，ilikegiraffes．
t：great！thisisforyou．（giveherasmilingface．）（2）activity：weloveanimals．（showsixtoys：panda，monkeyelephant，rabbit，snake，cat．）spanidethestudentsintosixgroups，everygroupchooseananimal，anddiscuhowtointroduceittoothers．
①tgivestheexample．
②prepareingroups．
③communicatewiththeothergroup．
e．g．s1：hello！look，thisisamonkey．itssmall．itsbrown．ithasalongtail．ilikemonkeys，becauseitislovelyandclever．doyoulikemonkeys？s2：yes，ilikemonkeys．s1：thank
④communicatewiththeteachers．
t：therearemanyanimalsintheworld，butwecantseesomeanimalstodayandmaybetheywillnevercomeback．letsprotectandsavetheanimals．doyouloveanimals？t：letschant．
animals，animals，．
tigers，hippos，bearsandpandas．weloveanimals，．
monkeys，horses，dogsandcats．animals，animals，．rk
lookupsomebooksafterclaandfindoutwheretherareanimalsarebothinandoutsidechina，andthenanswerthefollwingquestions．
（1）wherecanweseepandas／elephants／tigersinchina？
（2）wherecanweseehippos／crocodiles？
【试讲或说课时如有学生，那么与学生互动的环节是不可少的了，教师在课堂上调动学生的积极性、提高学生学习兴趣是衡量教师的一个标准。试讲者在互动环节要注意角色的把握，试讲者主要是发挥启发、引导学生的作用，而互动环节要以学生为主体，通过互动最终使学生达到充分理解课文重点内容和新课标要求的目的。】
【篇3：小学英语《lookat》me全英文教案。】
topic:unit2lookatmeteachingcontent:
lary:eye,ear,nose,mouth,cepattern:thisismyeye/ear…teachingaims:
listen,speak,readandwritetheeye,ear,nose,mouth,faceaboutbodypart,andcanintroducethesepartsofthemselvesbodyintandtoinstructiontermsofexpreingtouch,canlistenclear,anddoappropriateactionaccordingtothecorrectpronunciationofnewwordsandngimportantpoints:
learnwordsabouteye,ear,nose,mouth,ngdifficultpoints:
pronounceof“mouth”ismoredifficult,teachercanremindstudentsappropriately,payattentiontopronounceof“th”。thenewwordsandsentencesngaids:
1.asheepandaboutpicturesofeye,ear,nose,mouth,ngprocedures:
step1greetings(1minutes)
t:goodmorning,boysandgirls.s:goodmorning,teacher.t:longtimenosee.s:longtimenosee,too.t:howareyou,today
s:imfine,thankyou
t:i’mfine,too,thank2revision(4minutes)
reviewcontentoflastleonorally.t:lastleon,whatdidwelearndoyouremembers:yes,ido.t:ok,now,yousayitandiwritedown.s:pig,cat,tiger,sheep.t:well,readthewords,youtogether,onetwobegin.s:readallwords.t:very3warming-upandleading-in(3minutes)t:everyone,payattentiontome,what’sthisinenglish
s:it’sasheep.t：yes,it’sasheep,abeautiful,ifiwereasheep,iwillintroducemybodyparts,listentomeismy…s:eye.t:yes,eye,thisismy,today,let’slearnnewcontentaboutbody4presentation(15minutes)
teacherusespicturetointroducenewwords:eye,ear,nose,face,leadtonewwords:eye，ear，nose，mouth,studentslearnaboutwordsfistandreadwords:eye，ear，nose,mouth,:thepronounceof“mouth”ismoredifficult,teachercanremindstudent,payattentiontopronounceof“th”。studentsreadwordstogetherandtouch:
accordingtotheinstructofteacher,theteachersay:touchyoureye,touchyourear…thestudentsdoagame:whentheteachersays,touchyoureye,ear,face…youdon’tdoanyaction,butsheepsays,touchyoureye,ear,face…youmustdoaction.6.4studentscometotheplatform,playthegame,showthemselvestosomeoneiswrong,heorshewillgobacktheirseat,thelastoneiswinner,theteacherwillgiveheorsheacandybar,aftercla,andclaphandsfor5practice(10minutes)
teacherpointsatmyself:goodmiatme.iintroducemybodyatmyselfbodypartsandsay:thisismysamemethodintroduce:ear,nose,mouth,studentsfollowme,readandtouchthemselvesbodyactivity:listenandteacherletsstudentspracticebythemselves,pair-work,andthen,teacherletssomestudentscometotheplatformintroducethemselvesbodygivethemcenewsandthesentencepatterntogetherusebody6consolidation(7minutes)
games:theteacherspanidesstudentsintotwogroups,theteachersayssentence,onestudentofagroupruntoplatformquicklyandwriteitdownontheblackboardandreadit,heorshewinner,afterthat,exchangeotherthis,fivey,thewinnerwillwonaaward（abeautifulstar）,andgiveencourageto7summary(3minutes)
allstudentsreadnewwordsandsentenceteachermakeasummery,repeatcontentofthis8homework(2minutes)
copythenewwordsandsentencepatternthreengreflections
小学开设英语课是当代社会发展的需要，可以有效地提高我国英语水平。小学生模仿力、记忆力、可塑性强，具有许多成年人甚至中学生不具备的优越条件，小学开设英语可以发挥他们学习语言的潜力。小学开设英语课可以使小学生了解其他国家和民族的优秀文化传统，开阔眼界，扩展他们的知识，提高他们的思想品德修养，树立国际意识。因此，我市已经从小学三年级开始开设英语课，采用的是pep教材。这套教材把语言功能、结构、话题、任务有机结合，采用了多种教学方法，并注意利用多种媒体。
本堂课中间主要还采用了课前运动，分组比赛，分组演练，游戏活动，等一系列形式来进行这节课的教学，其主要目的在于培养三年级学生对英语产生浓郁的学习兴趣。俗话说：“兴趣是最好的老师”。我要说，兴趣也是学习好英语的前提，当然任何事物都是这样。除此之外，逐步认知身体部位的新授单词以及本课的重点句型“thisismy…”。因为每一个环节的紧凑安排，合理的分散重，难点等环节，使学生不自觉的在欢快的氛围当中已经做到了学以致用，这也是我的目的所在。不过，我觉得在一些细节操作上仍然有所欠缺。在小组练习句型游戏时，学生对新句型掌握不太牢固，因而有些学生说出来的时候不是那么准确。在以后的教学中，我会努力加强个人文化知识的学习以及让学生有效及时地掌握理解新知识，巩固旧知识，让课堂变得更加生动形象有趣。
instructionaldesignoundinformationcontent:sectiona,unit5,jefcteacher:chenjiedescriptionofstudents:40studentsinjunior/primary/senior1,15boysand25girlsleonduration:40minutestime&date:8:20—9:00am,tuesday,29thapril,2014ngcontents:
topic:askingthewords:face,hand,….newpatterns:couldyoutellmehowtogettothepostoffice按照听、读、说、写的内容分开写，然后要功能与话题。
ngkeypointsanddifficulties:
teachingkeypoints:
teachingdifficulties:ngobjectives:dgeobjectivesbytheendoftheleon,studentsshouldbeableto:……yobjectivesbytheendoftheleon,studentsshouldbeableto……
s/morality/attitude….studentslearntobegoodlistenerswhiletheothersarengaids:
tapes,ohp,chalk,ngmodel/methodpppthreestagesfive-stepteachingmethodaudio-lingualmethod,etc.语法课见第七单元
每节课选用一个
styleoftheleon:reading
step-in/warm-up/revisionsteptationstepce/pairwork,etcsteptionstepidation/feedbackstepysteprk以上每步不超过八分钟，呈现新内容不超过五分钟，而且中间可以灵活增加。