外研版必修一Module 5 A Lesson in a Lab Grammar 课件（36张）.ppt

module5alessoninalab 1 原级比较 两者程度相同 用句型as 形容词 副词 as表示 否定名式为 notas so 形容词 副词as e g dickisastallashisbrother tomspeaksasquicklyashiscousin ihaveneverseenapersonas socleverasheis 形容词和副词比较等级的用法 2 比较级 a 表示a超过b 此时用形容词和副词的比较级 e g ourclassroomisbrighterthanyours dogsrunfasterthanrabbits idon tthinkmathismoreimportantthanphysics b 表示a不如b 句型 less 形容词 副词原级 e g rabbitsranlessfastthandogs jennyislesscleverthanhersister itrainslessoftenhereinautumnthaninspring 3 形容词和副词比较级的特殊用法越来越 比较级 and 比较级 e g youaregrowingtallerandtaller 你越长越高了 englishisbecomingmoreandmoreimportant 英语越来越重要了 b 越 越 the 比较级 the 比较级e g themorecarefulyouare thebetteryouwilldointheexam 你越小心 就会考得越好 themoreyoupractice themorefluentlyyouwillspeak 你练得越多 讲得就越流利 c 表示两者之中比较 的一个 用of引导 比较级前加上the e g jackisthetallerofthetwobrothers 杰克是兄弟两中较高的一个 thisisthebiggerofthetworooms 这个房间是两个中较大的一个 d nomorethan表示 只 不超过 不多于 相当于only e g hiswholeschooladdeduptonomorethanoneyear 他所接受的学校教育不过一年 shehasnomorethanoneyuaninherpocket 她兜里只有一块钱 e nomore than表示 一样不 而notmore than则表示 不像 那样 相当于 notso as e g hsisfeelingnobetterthanyesterday 他觉得不比昨天好多少 sheisnotmoregenerousthanheryoungersister 她不如她妹妹那样慷慨大方 sheisnotsogenerousasheryoungersister 相当于 f nolessthan表示 多达 那样多 至少 起码 相当于asmuch manyas 蕴含这个数是大的 而notlessthan表示 不少于 不强调这个数的大小 只说明数据本身 e g ihavenolessthantendictionaries 我起码有10本字典 至少 ihavenotlessthantendictionaries 我有的词典不少于10本 不含 我的词典多 的意思 只说明一个事实 g noless than表示 不比 差 与 同样地 相当于 as as e g sheisnolessbeautifulthanhersister 她和她的姐姐一样漂亮 h 不用比较级的形容词如 senior junior superior inferior等 e g heisthreeyearsseniortome 他比我大三岁 yourknowledgeofelectronicsismuchsuperiortomine 你对电子学的知识远远超过我 i 比较级的修饰语 通常为副词或短语 置于比较级前面 说明比较级的程度 alittle little abit bit alot agreatdeal much far rather slightly byfar even still nearly almost any just times等 e g themoonismuchsmallerthantheearth theresultoftheexperimentturnedouttobeevenbetterthanexpected speakabitmoreslowly please theoutputofthepapermillisthreetimeshigherthanitwaslastyear makesentencesaboutthecomparativesizesofthepairs usethewordsinthebrackets yangtzeriver songhuariver 6 300kilometers 2 309kilometers long length example a theyangtzeriverisaboutthreetimesaslongasthesonghuariver b theyangtzeriverisaboutthreetimeslongerthanthesonghuariver c theyangtzeriverisaboutthreetimesthelengthofthesonghuariver winterinharbin winterinbeijing 20 5 cold coldness a winterisfourtimesascoldinharbinasinbeijing b winterisfourtimescolderinharbinthaninbeijing c winterinharbinisfourtimesthecoldnessofinbeijing mounttai mountqumolangma 1521m 8848m high height a mountqumolangmaisaboutsixtimesashighasmounttai b mountqumolangmaisaboutsixtimeshigherthanmounttai c mountqumolangmaisaboutsixtimestheheightofmounttai myhouse myaunt shouse large size 80squaremeters 160squaremeters a myaunt shouseistwiceaslargeasmyhouse b myaunt shouseistwicelargerthanmyhouse c myaunt shouseistwicethesizeofmyhouse lilyweighs tomweighs 45kilograms 90kilograms heavy weight a tomweighsovertwiceasheavyaslily b tomisovertwiceheavierthanlily c tomisovertwicetheweightoflily 倍数 形容词比较级 than 倍数 the size height length weight width depth age of conclusion 倍数 half once twice times as 形容词 as usethewordsbelowtowritesentencesasintheexamples example temperature get lowthetemperaturegetslowerandlower 1 hotmetal get bigthehotmetalisgettingbiggerandbigger 2 magnesium get hotthemagnesiumisgettinghotterandhotter 3 sun get strongduringthemorningthesunisgettingstrongerandstrongerduringthemorning 4 sea become warmtheseaisbecomingwarmerandwarmer underlinethecomparativeexpressions b circletheadverbsusedtogivemoreinformationaboutthecomparativeexpressions lookatthefollowingsentences and 1 comeabitcloser 2 weneedrathermorethanthat 3 itweighsalittlemorethanbefore 4 it llbealotheavierthanmagnesium 5 isitanyheavier 6 weneedapiecewhichis very muchbiggerthanthat comparetheitems peopleyouknow useoneoftheseexpressions example twolessonsthephysicslessonwasalotmoreinterestingthanthechemistrylesson alittleabitalotrathernoany very muchlots 1 debbie长得很快 她个子越来越高 debbieisgrowingfast she sgetting 2 我们图书馆藏书的数量是你们图书馆的四倍 thebooksinourlibraryare thanthoseinyours fillintheblanks tallerandtaller fourtimesmore 3