冀教版九年级全册Unit 5 Lesson 27教案设计

Unit5LookintoScience

Lesson27

【教学目标】

1.记忆单词telescope,solar,certainly,unless,double,mystery;短语solarsystem,atnight,even

if.

2.掌握重点句型：

(1)1toldmyfatherthatwewerestudyingthesolarsystem.

(2)Actually,doublethesizeofyourhouse!

(3)Well,it'sworthatry,evenifIdon'tfindaplanet.

3.培养学生探索科学的精神.

4.理解课文意思并能回答课后的问题.

【教学内容】

1.学会并能正确使用单词及短语:Telescope,solar,certainly,unless,double,mystery,solar

system,atnight,evenif.

2.能够运用下列句型：

(1)1toldmyfatherthatwewerestudyingthesolarsystem.

(2)Actually,doublethesizeofyourhouse!

(3)Well,it'sworthatry,evenifIdon'tfindaplanet.

【教学重难点】

1.能够正确应用本课的重点词汇telescope,solar,certainly,unless,double,mystery;掌握短

语solarsystem,atnight,evenif.

2.掌握unless引导的条件状语从句与evenif引导的让步状语从句的用法.

【教学思路】

思路一:主要以“丹尼星球"为题，让学生们了解更多关于探索宇宙奥秘的知识.通过师生互动,

询问学生们有关星球、宇宙的问题，导入新课，以学生感兴趣的话题开篇，重点在于培养学生的学

习兴趣.

思路二:主要以"丹尼星球"为题，让学生们了解更多关于探索宇宙奥秘的知识.通过本课的新

词telescope引入新课，锻炼学生的口语表达能力.设置简单问题,让大部分同学都能回答出来，增

强他们的自信心.

【教学准备】

教师在课前设计教学PPT,准备录音机和磁带，多媒体等.

【教学过程】

I・Leadin

Leadingin情景1

T:Hello,everyone!Weliveontheearth.Outoftheearth,it'stheuniverse.Doyouknowit?Do

youknowtheplanet?Doyouknowthereislifeonotherplanets?OK,now,let'slearnaboutit.

Letthestudentsdiscussthefollowingquestions:

(1)Haveyoueverseenorusedatelescope?

(2)Whatwouldyouliketouseatelescopefor?

(3)Whatdoyouwanttofindusingthetelescope?

(4)Canyoufindcreaturesintheouterspace?

设计意图:通过询问学生们有关星球、宇宙等的问题，激发他们的学习兴趣.

Leadingin情景2

Showapictureofatelescope.

T:Goodmoming/aftemoon,class.Lookatthispicture.What'sthisinEnglish?

S1:Ifsatelescope.

T:Haveyoueverplayedthetelescopetoys?

S2:Yes,that'sfunny.

T:Whatarethethingslikethroughthetelescope?

S3:They'rebigger,doublesizesormore.

T:Canyoufindaplanetwiththem?

S4:No,it'samystery.

T:Youcan*tfindoneunlessyouhaveabiggertelescope.

设计意图:通过本课的新词telescope导入新课,锻炼学生的口语表达能力.

II.Presentation

TheteachershowsthenewwordsonPPT.Askstudentstotrytoreadthesewords.Thestudents

followtheteacherthreetimes.Thengivethestudentsfiveminutestorememberthewords.Let

studentsspellandreadthemonebyone.

设计意图:教师以PPT的形式呈现本课中出现的生词，领着学生们朗读并记忆，为下面的课

文学习做好充分准备.

III.Listening

1.ShowLet'sDoIt!No.2.onPPT.

Listentothedialogueandtickthecorrectanswers.

(1)WhatdidDannydolastnight?

||Hetriedtostudythemoon.

||Hetriedtofindanewplanet.

(2)WhatdidDannyuse?

|Atelescope.

|Abook.

(3)WhatdidDannyneed?

I[Moresleep.

|Morestars.

Keys:(1)Hetriedtofindanewplanet.(2)Atelescope.(3)Moresleep.

2.PlaythelisteningmaterialforLesson27.Playitonceandaskthestudentsjusttolisten.

3.Playtheaudiotapeasecondtimeandaskthestudentstocompletetheexercise.

4.Checktheanswers.

设计意图:听录音前，让学生把问题和选项通读一遍，以便掌握听力策略.学生反复听磁带并

跟读.第一次听，要求学生大概理解对话的意思.第二次听，改为一句一句听,仔细听出每句话的内

容并完成问题.通过反复听磁带并跟读，培养学生们听说的能力.

IV-Reading

1.Readthetextaloud.

T:Boysandgirls,it'sourreadingtime.Pleasereadafterthevideoandyoushouldpaymore

attentiontoyourpronunciation.

设计意图:让学生大声朗读课文，对课文的意思有个大致的了解，对于培养学生的正确发音

以及培养学生的语感都有重要作用.

2.Scanreading.

T:Boysandgirls,nowthatyouhaveknownsomethingaboutthistext,let'sreadthedialogueto

getmoreaboutit.Pleasereadquicklyanddothefollowingexercises.(ShowLet'sDoIt!)

Readthelessonandwritetrue(T)orfalse(F).

(1)Dannyisstudyingthesolarsystematschool.

(2)DannyislookingthroughthetelescopewhenJennyandBriancometovisit.

(3)Duringtheday,Dannycanseemanystarsintheskythroughthetelescope.

(4)JennyandBrianwilljoinDannyaftersupper.

(5)Dannyhasdiscoveredanewplanet.

Keys:(1)T(2)T(3)F(4)T(5)F

设计意图:要求学生快速地把握课文信息，学会找关键句，不用详读，快速跳读,以找出答案为

目的.

3.Carefulreading.

T:Welldone!Boysandgirls!Nowthistime,Iwillmaketheexercisealittlemoredifficult.

Readthelessonagainandfillintheblanks.

ShowLet'sDoIt!

Readthelessonandfillintheblanks.

OnSaturdayafternoon,BrianandJennyvisitedDannyathishouse.Whentheyarrived,Danny

wasoutsidelookingatelescope.BrianandJennylaughedatDannybecausehewasusingthe

wrongofthetelescope.Ofcourse,Dannycouldn'tseetheduringtheday.Brianand

JennyalsowantedtojoinDanny.Theydecidedtocomebackaftersupper.Afterthesunwentdown,

theycouldseethestars.Dannyhopedtoanewplanet.

Keys:through,end,stars,discover

教材解读

Dannyhopedtodiscoveranewplanet.

hope意为"希望"，其后可接动词不定式或从句，但不能接复合宾语，对于一些期待/不期待发

生的事情可使用Ihopeso."我希望如此“/Ihopenot."我不希望如此

设计意图:再次阅读对话,着重考查其主要内容的概括，更深层次地理解文章.

4.Readthetextandfindoutmainphrasesandsentences.

Mainphrases:

Solarsystem

Atnight

Evenif

Turnaround/round

Mainsentences:

Whentheyarrive,Dannyisoutsideintheyard.

HesaidthatIcouldusehistelescope.

MaybeBrianandIcanjoinyouaftersupper.

Idon'tthinkyoucanfindoneunlessyouhaveabiggertelescope.

Actually,doublethesizeofyourhouse!

Well,it'sworthatry,evenifIdon'tfindaplanet.

Maybewe'llfindotheramazingthings!

V.教材解读

1.Whentheyarrive,Dannyisoutsideintheyard.

arrive为不及物动词，意为"到达，来到"，后接表地点的名词时，需使用介词in或at.in用于指较

大的地点,at则指比较具体的小地点.arriveat/in与getto/reach同义.

2.HesaidthatIcouldusehistelescope.

本句含有that引导的宾语从句.无论主句是陈述句还是疑问句，宾语从句都应使用陈述语序.

含宾语从句的复合句，主从句谓语动词的时态呼应包括以下三点：

（1）如果主句的谓语动词是一般现在时，宾语从句的谓语动词可根据需要，选用相应的时

态.

（2）如果主句的谓语动词是一般过去时，宾语从句的谓语动词应用相应的过去时态.

（3）如果宾语从句所表示的是客观事实、普遍真理、自然现象或习惯性动作等，不管主句

用什么时态,从句时态都用一般现在时.

3.Dannyturnsthetelescopearoundandlooksthroughitagain.

turnaround/round意为"调转方向，转身

4.MaybeBrianandIcanjoinyouaftersupper.

maybe为副词，意为"也许”;may是情态动词,也表示"也许"，但后面必须跟动词原形.

join为及物动词，意为"参加，加入"，其后可接人，也可接表示团体、组织、党派等的名词.join

为非延续性动词，和表示一段时间的状语连用时应变为bein.

5.Idon'tthinkyoucanfindoneunlessyouhaveabiggertelescope.

unless为连词，意为”除非，如果不”.由unless引导的条件状语从句既可以是真实条件,也可以

是非真实条件.unless通常相当于if.not...

6.Actually,doublethesizeofyourhouse!

double可作名词或形容词，意为”两倍(的);双重(的)”，也可作动词，意为“使加倍”.

7.Well,it'sworthatry,evenifIdon'tfindaplanet.

worth意为"相当……价值，值得"，常用于beworth+n./doing结构.

evenif为从属连词词组,表示假设情况，意为“即使……”，用来引导让步状语从句.

8.Maybewellfindotheramazingthings!

amazing是amaze的・ing形式，意为"(令人)惊异的”;过去分词amazed则表示"(感到)惊异的”.

9.Theearth,thesunandthemoonallbelongtothesolarsystem.

belongtosb.意为“属于某人"，相当于besb*s.belongto不能用于进行时态和被动语态.

10.Scientistssaytheuniversecontainsbillionsofgalaxies.

billionsof意为”数十亿计的”,billion,million,thousand,hundred等数词与具体数字或限定词

some,afew,many等词连用时，其后不应加s

设计意图:学生是学习的主体，教师要努力调动学生学习的积极性和主动性,通过组内合作

讨论，探究，找出对话中的关键单词和短语，把所学的知识转化为学习能力.

VI.Task

1.ShowLet*sDoIt!

Whatinterestsyouaboutthesolarsystem?Ifyouhadachancetogotospace,wouldyougo?

Shareyourideaswithapartner.

2.Askthestudentstosharetheirideaswithapartner.Thepersonlisteningshouldwritedown

theideasofthepersonwhoisspeaking.

3.Haveeachstudentpresenttheirpartner'sideasaboutgoingtospaceingroupsortotheclass.

设计意图:锻炼学生的口语表达与写作能力,同时培养学生的合作意识.

VD-Practice

1.用方框中所给词的适当形式填空

Other,try,my,big,amaze

(1)Whydoyouthinkscienceis?

(2)Nothinghappened,thoughhehisbest.

(3)Yourappleismuchthanmyapple.

(4)Ihavetwofriends.OneisinClassFour,andtheisinClassFive.

(5)Thiscoatisblue,butisblack.

2.根据句意及首字母提示补全单词

(1)Withat,youcanseestarsintheskyatnight.

(2)Withouttreatment,shewillalmostcdie.

(3)Don'taskmetoexplainuyoureallydon'tunderstand.

(4)Accordingtotheresearch,thetotaloutputisdthatoflastyear.

(5)Inthisway,hewasabletosolvethem.

3.句型转换

(1)ThecameramustbeMike,s.(同义句转换)

ThecameramustMike.

(2)Ifyoudon*tgoforit,yourdreamwon*tcometrue.(同义句转换)

Yourdreamcometrueyougoforit.

(3)HedecidedtojoinanEnglishclub.(同义句转换)

He