八年级英语上册 Unit 3 Computers Grammar课件 （新版）牛津深圳版.ppt

period3 grammar module2scienceandtechnology oxfordenglish unit3 computers willcomputersmakeourlivesbetter revisionandintroduction 1 completethearticle thefirstcomputerswere thancars butnowtheyarebecoming and computerscancalculateata speedthanwecan computersarenot thanhumanbeings buttheymaybeabletodoa jobthanus inthepast computerswere expensive butnowtheyaremuch cheaper cleverer faster smaller bigger more grammarathecomparativeofadjectives 2 whenwecomparetwopeopleorthings wecanusethecomparativeofadjectives better better howdoweformthecomparativeofadjectives er more than thefirstcomputerswere thancars butnowtheyarebecoming and computerscancalculateata speedthanwecan computersarenot thanhumanbeings buttheymaybeabletodoa jobthanus inthepast computerswere expensive butnowtheyaremuch cheaper cleverer faster smaller bigger more better better thesmalldogrunsfast thehorseruns thanthesmalldog fast faster fastest theleopardruns faster thefastest thecowis thanthesheep theelephantis ofall heavy heavier heaviest thesheepisheavy heavier theheaviest jimisstrong lileiis tomis stronger thestrongest exercise thebluecarisnice theredcaristhebluecar 红车比蓝车好看 thecolourfulcarisofall 彩色车最好看 nicerthan thenicest howdoyoulikethesechristmastrees 123 thefirstchristmastreeisbeautiful thesecondoneis thanthefirstone thethirdoneis ofthethree morebeautiful themostbeautiful 500 00 1000 00 1500 00 thegreenbagisexpensive thewhiteoneis thanthegreenone thepurplebagis oneofallthebags moreexpensive themostexpensive 形容词和副词比较级和最高级的规则变化 规则变化 一般在词尾加 er或 est shorter theshortest 以字母e结尾的单词后加 r或 st finer thefinest heavier theheaviest 以 辅音字母 y 变y为i 再加 er或 est short fine heavy bigger bigthinhot thethinnest thinner thebiggest hotter thehottest 以辅 元 辅结尾的 双写尾字母 再加 er est 长的形容词 多音节或少数双音节形容词 在词前more most expensivebeautifuluseful themostexpensivethemostbeautifulthemostuseful moreexpensivemorebeautifulmoreuseful 1 large 2 nice 3 dry 4 thin 5 clever 6 happy 7 heavy 8 fat 9 politely 10 early 11 beautiful 12 quickly 13 interesting 14 excited largerthelargest nicerthenicest drierthedriest thinnerthethinnest clevererthecleverest happierthehappiest heaviertheheaviest fatterthefattest more themost morebeautiful themostbeautiful let sdoit 写出比较级和最高级 morequicklythemostquickly moreinterestingthemostinteresting moreexcitedthemostexcited earliertheearilest 这个箱子比那个箱子重 thisboxis thatone 2 你的电脑比我的大 yourcomputeris mine heavierthan biggerthan 3 长江比黄河长 theyangtzeriveris theyellowriver longerthan 4 这个故事没有那个有趣 thisstoryis thatone lessinterestingthan filltheblanks a 谓语 比较级 than b conclusion 比较级的句子结构 oraltranslation 1你认为英语比数学简单吗 doyouthinkenglishiseasierthanmath 2这个相机比那个相机贵 thiscameraismoreexpensivethanthatone 3玛丽比吉姆学习努力 marystudiesharderthanjim 4我比我姐姐跳得远 ijumpedfartherthanmysister a 谓语 比较级 than b let splayagame 开火车 youmustcompareyourselfwithsomeoneinourclass e gage height weight hairlength orotherthings e gbook watch pen schoolbag 如果你们组有任何人掉链 都会被扣掉一个a 整组都接上 将会得到4a eg i mfatterthan moreexpensive lighter completetheconversationbelowandonpage40withthecomparativeoftheadjectivesfromthebox heavier smaller bigger s1 canadaorchina country big s2 askandanswerquestionsusingthefollowinginformation thefirstonehasbeendoneforyou country big canadachina city big river long island large mountain high s1 canandaorchina country big s2 askandanswerquestionsusingthefollowinginformation thefirstonehasbeendoneforyou theredlaptopisthesmallestamong ofthethree whenwecomparemorethantwopeopleorthings weusethesuperlativeofadjectives grammarbthesuperlativeofadjectives 3 theredlaptopisthesmallestamong ofthethree butitis themostexpensive howdoweformthesuperlativeofadjectives est most the thedogis themouse thehorseis all theboyis theman thebabyis thethree big bigger biggest youngyounger youngest biggerthan thebiggestof youngerthan theyoungestof jim lilei tom lileiis tom jimis ourclass 30 20 10 theyellowcoatis thepurpleone thebrowncoatis thethree tallerthan thetallestin cheaperthan thecheapestof conclusion thehorseisthebiggestofall thebabyistheyoungestofthethree thebrowncoatisthecheapestofthethree jimisthetallestinourclass 主语 be the 最高级 of in 形容词最高级句式的结构 注意 形容词最高级前一定要用the 最高级后面可用in of等短语来说明比较围 thesuperlativeofadjectives thedogis themouse thehorseis all theboyis theman thebabyis thethree big bigger biggest youngyounger youngest biggerthan thebiggestof youngerthan theyoungestof jim lilei tom lileiis tom jimis ourclass 30 20 10 theyellowcoatis thepurpleone thebrowncoatis thethree tallerthan thetallestin cheaperthan thecheapestof david i dliketoseesomeofyourcameras salesman certainly thisisthemostexpensivemodel thisisthecheapestmodel thisisthenewestandlightestmodel a b c b1davidisshoppingforacamera lookatthephotosandwritetheletterofthecorrectmodelaftereachstatement 1 2 3 tony didtheyshowyouanycameras david yes the 1 modelis 2 the 3 modelcosts 4 the 5 modelwasmadein 6 the 7 modelweighs 8 expensivelightoldsmall smallest 99 8mmx56 4mmx24 5mm mostexpensive oldest lightest 3 589 2010 170g b2davidtoldhisfriendtonyabouthisshoppingtrip completedavid ssentenceswiththesuperlativeoftheadjectivesfromthebox s1 whichisthebiggest theearth themoonorthesun s2 thesunisthebiggest theearth themoonorthesun big abee abutterflyoranant small iron silverorgold valuable abear awhaleoranelephant heavy aspaceship aplaneoratrain fast askandanswerquestionsusingthefollowinginformation thefirstonehasbeendoneforyou morepractisemysisteris thanrichard old isfootball thanvolleyball exciting ithinkshelooks thaninthephoto pretty canyouwalk thanayoungman far insummeritismuch inwuhanthaninbeijing hot tomis boyinourclass old older moreexciting prettier farther hotter theoldest 7 itwasthe dayofhislife bad 8 whichis room201orroom108 bright 9 wewatchedavery playtheday