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单元（章节）课题Unit4Astronomy:thescienceofthestars本节课题Reading:Howlifebeganontheearth?课标要求Developthestudents’rea

dingskills.三维目标1.Studentswillbeabletolearntheformationoftheearth.2.Improvestudents’readingcomprehensionabilit

y.3.Trainstudents’interestinscienceandastronomy.教材分析阅读部分讲述了地球生命的起源，水的形成使得地球有别于其他星球，它使得地球上生命的诞生成为可能。科学家认为，地球上

的生命首先诞生于水中，然后通过上百万年后，陆地上才长出绿色植物，然后出现陆栖动物和水陆两栖动物。最初的动物靠孵化繁衍后代，后来出现了哺乳动物，人类也随之产生了。文章最后讲述的现象发人深省：Theearthmaybecometoohot

forthelivesonit.它关系到地球上生命的未来。学情分析Studentsknowlittleaboutastronomy,sotheycan’tquiteunderstanditandtalkmoreaboutit.教学重难点Howtohelpstude

ntsunderstandthepassageeasily.提炼的课题Helpstudentsknowthedevelopmentoflifeontheearth.教学手段运用课本、PPT、练习册教学资源选择教学过程环节学生要解决的问题或任务教师教

与学生学教师个性化修改Step1Lead-inandrevisionStep2Pre-readingStep3Self-learningStep4Students’showStep5SummaryStep6EvaluationReadthewordsfluently.Trytop

redictthemainideaofthepassage.SkimmingScanningCarefulreadingBeactivetoshowtheiranswers.Sumupthemainideaofthepassage.Evaluatestudents’scor

esandchoosethebestgroup.Correctthestudents’mistakesinpronunciation.Payattentiontothemistakes.Givestudentssomehints(titleandpictures).Show

theirideasactively.1.Guidestudentstoskimthepassagetogetthegeneralidea.2.Dividethepassageintothreeparts.Fill

intheblanks.Askstudentsquestionsaccordingtoeachparagraph.Answerthequestionsactively.Encouragestudentstobeactivein

classandshowtheiranswers.Correcttheirmistakes.Summarizethemainideaofeachpart.Guidestudentstodothesummary.Thinkitcarefully.课堂检测内容Readingexe

rciseonEnglishpaper34.课后作业布置Learnthewordsandphrasesbyheart.预习内容布置Readingthepassageagainandunderlinetheimportantandd

ifficultpoints.