小学英语比较级和最高级知识点PPT课件

Comparatives,tocomparethingsandpeople,形容词&副词比较等级的构成,英语形容词比较等级有三个：原级，比较级和最高级,fast,Lookatthepicturesandunderstand看图并理解,fast,faster,Lookatthepicturesandunderstand看图并理解,fast,faster,fastest,Lookatthepicturesandunderstand看图并理解,Lookatthepicturesandunderstand看图并理解,big,bigger,biggest,规则变化,1）单音节词末尾加-er（比较级），-est（最高级）(少数以er，ow结尾的双音节词),原级比较级最高级greatgreatergreatestsmallsmallersmallestcleancleanercleanestclevercleverercleverest,2）单音节如以e结尾，只加-r（比较级），-st（最高级）,finefinerfinestwidewiderwidestableablerablest,规则变化,3）闭音节单音节词如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）,4）以辅音字母+y结尾，则变y为-i，再加-er和-est,bigbiggerbiggesthothotterhottestredredderreddest,easyeasiereasiest,规则变化,5）其它双音节和多音节词皆在前面加单词more和most,carefulmorecarefulmostcarefuldifficultmoredifficultmostdifficultdeliciousmoredeliciousmostdelicious,不规则变化,原级比较级最高级good/wellbetterbestmany/muchmoremost,原级用法,2.asasnotas/so.as.你和汤姆是一样好的孩子。YoureaboyasgoodasTom.约翰不象迈克那么笨。JohnisnotsostupidasMike.,1.副词very,too,so,quite等修饰原级。如：verytall、toohot、socoldquiteinteresting,比较级的用法,一般句式的构成：A+is/are+形容词比较级+than+BSheistallerthanme.TherearemorestudentsinClassOnethaninClassTwo.,可用much,alittle,even等修饰：HemademuchmoremistakesthanIdid.HeisevenricherthanI.,最高级的用法,形容词最高级前必须加the,副词最高级前常省略the，后面多用of，in短语表示范围：Itwasthemost/leastinterestingstory.Heisthetallestofthethree.Herunsfastest.,一写出下列单词的比较级和最高级：beautiful_expensive_popular_delicious_old_good_fat_low_small_big_narrow_crazy_,二选择：1.Myteacheris_thanmymother.A:beautiful.B:morebeautifulC:mostbeautiful.2.Thisgameis_thanthatgame.A:popularB:morepopularC:mostpopular3.Heisthe_studentinourclass.A:goodB:betterC:best.4.Myfatherisso_.A:tallB:tallerC:tallest5.Icanjumpvery_.A:farB:fartherC:farthest6.Thehamburgeris_thanthebread.A:deliciousB:moredeliciousC:themostdelicious7.Thisbookis20yuan.Thatbookis30yuan.Sothatbookis_thanthisbook.A:expensiveB:moreexpensiveC:mostexpensive.,8.Thewitchis_thantheoldman.A:badB:worseC:worst.9.Ihavemanybooks.Lilyhas_booksthanme.Jackhas_booksthanLily.A:many,many.B:most,mostC:more,more10Mybookbagisas_asmysistersbookbag.A:bigB:biggerC:biggest.11.Jackistoo_toreachthecookiesontheshelf.A:littleB:littlerC:littlest12.Mybookis_thanLilysbook.A:goodB:betterC:best13.Whichoneis_?Winterorsummer?A:hotB:hotterC:hottest14.Peteristhe_oneinourclassroom.A:lateB:laterC:latest15.Ica