会计学规则变化如下(rúxià):1)单音节形容词的比较级和最高级形式是在词尾加-er和-est构成。greatgreatergreatestwarmwarmerwarmestlonglongerlongeststrongstrongerstrongest2)以-e结尾的单音节形容词的比较级和最高级是在词尾加-r和-st构成。widewiderwidestclosecloserclosestbravebraverbravest(3)以-y结尾,但-y前是辅音字母的形容词的比较级和最高级是把-y去掉,加上-ier和-iest构成.happyhappierhappiestfunnyfunnierfunniesthealthyhealthierhealthiesttidytidiertidiest(4)以一个辅音字母结尾其前面的元音(yuányīn)字母发短元音(yuányīn)的形容词的比较级和最高级是双写该辅音字母然后再加-er和-est。hothotterhottestredredderreddestfatfatterfattestsadsaddersaddestthinthinnerthinnest(5)部分双音节和多音节形容词的比较级和最高级需用(xūyònꞬ)more和most加在形容词前面来构成。difficult,popular,helpful,cheerful,tired不规则变化(biànhuà)如下：形容词比较级的用法(yònꞬfǎ):常用(chánꞬyònꞬ)来修饰比较级的词：much,even,still,somuch,alittle,abit,alot,far等。只能修饰原级不能修饰比较级的：very,quite,so,ratherThisparkismuchmorebeautifulthanthatone.Tom’sfatherisalittlefatterthanJim’s.Ourteacheris___________thanweare.我们老师的个子比我们的高。2.Itis_________todaythanitwasyesterday.今天的天气比昨天(zuótiān)暖和。3.Thispictureis___________thanthatone.这张照片比那张照片漂亮。4.Thesunis_____________thanthemoon.太阳比月亮大得多。5.Hishandwritingis_____（well）.Hewrites______(good)inhisclass.6.Sandyis________(lazy)personinhisclass.7.Tomisa______(care)boy.Hedoeseverything_______(careful).Hedoeseverything_____________inhisfamily.形容词和副词(fùcí)最高级的用法:比较级和最高级的特殊句型(jùxínɡ)：①比较级+and+比较级“越来越……”Whenitisgoingtorain,itcangetdarkeranddarker.②比较级+thananyother+单数名词“比其他任何……都……”ChangjiangRiverislongerthananyotherriverinChina.③the+比较级…,the+比较级…“越……,就越……”Themoreyoueat,thefatteryouwillbe.④the+比较级+ofthetwo“两个中较……的那个”Heisthetallerofthetwo.⑤Which/Whois+比较级，AorB?“A和B哪一个/谁更……?”Whichismoreinteresting,swimmingordiving?Which/Whois+the+最高级，A,BorC?“哪一个/谁最……?”Whichisthefastestwaytotravel,byplane,bybusorbytrain?⑥oneofthe+最高级+复数(fùshù)名词“最……之一”IthinkHarryPotterisoneofthemostpopularnovels.⑦the+序数词+最高级“第几最……”BeijingDuckisthesecondnicestdishIhaveevermet.Sheis____________studentinherclass.她是班上最好的学生(xuésheng)。Shanghaiisoneof___________citiesinChina.上海是中国最大城市之一。Thisis__