小学形容词的比较级、最高级

.形容词的比较级和最高级一、一般句式A+is/are+形容词比较级+than+BA是主格 B是宾格如：Sheistallerthanme.二、形容词比较级变化：（一）规则变化1.单音节词末尾加-er（比较级），-est（最高级）原级比较级最高级greatgreatergreatestsmallsmallersmallestfastfasterfastestsoftsoftersoftest2.单音节如以e结尾，只加-r（比较级），-st（最高级）原级比较级最高级largelargerlargestsafesafersafestnicenicernicestfinefinerfinest3.闭音节单音节词(末尾只有一个辅音字母，须先双写这个辅音字母)再加-er（比较级），-est（最高级）原级比较级最高级bigbiggerbiggesthothotterhottestthinthinnerthinnestsadsaddersaddest特别提醒：new,few,slow,clean等词含有字母组合，且发的是长元音，不用双写。4.以-y结尾的词，如-y前是辅音字母，则变y为-i，再加-er和-est。以-e结尾的词只加-r和-st原级比较级最高级prettyprettierprettiesteasyeasiereasiestbusybusierbusiest5.双音节、多音节形容词(即音标中含有三个或三个以上元音音素的词)，在单词前面加上“more”“most”构成比较级、最高级：原级比较级最高级beautifulmore beautifulmost beautifulinterestingmore interestingmost interestingdifficultmore difficultmost difficulthonestmore honestmost honest特别提醒：以形容词前缀un构成的三音节形容词不适合上述情况：如：unhappy-unhappier-unhappiest untidy-untidier-untidiest6.以形容词+ly构成的副词要在前面加more,most原级比较级最高级slowlymore slowlymost slowlyquicklymore quicklymost quicklyfriendlymore friendlymost friendly7.由ing分词和-ed分词演变过来的形容词只能加more或most来表示比较级和最高级：原级比较级最高级interestingmore interestingmost interestingexcitedmore excitedmost excitedtiredmore tiredmost tiredboringmore boringmost boring（二）不规则变化：原级比较级最高级badworseworstfarfartherfarthestfarfurtherfurthestgoodbetterbestillworseworstlittlelessleastmanymoremostmuchmoremostwellbetterbest练习题：1、 请写出下列形容词的比较级和最高级big _ _ small_ _ new_ _ tall _ _ short _ _ old _ _ strong_ _ fat_ _ hot _ _ cold _ _ thin_ _ nice_ _ good_ _ high _ _ bad _ _ much _ _ low_ _ dirty_ _ cheap_ _ easy_ _ ugly_ _ heavy_ _ excited_ _ pretty_ _ interesting_ _ delicious_ _ beautiful_ _ expensive_ _ 二、Writetheanswers.（根据题意，写出答案。）1. Theblackdogis_(thin)thanthewhitedog.2. Thisballoonis_(big)thanyours.3. Mybagis_(heavy)thanyours.4. Johnis_(strong)thanMike.5. Iam_(short)thanLucy.三、用所给词的正确形式填空，每词用一次。younglongtallheavyoldthin1. Monkeystailis_thantherabbitstail.2. Dickis11yearsold.Ninais12yearsold.Dickis_thanNina.3. Im140cm_.4. Im40kg.Youre42kg.Im_thanyou.5. How_areyou?Im45kg.四、选择填空。1、 How heavy are you?_A、 Im 48 years old. B、Im 48kg. C、Im 48cm.2、 Tom is 120 cm.Jack i