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Unit4WhatdoyoudoonSaturday?PartA陕旅版·四年级下册ThinkandcircleWhatdoyouoftendoontheweekend?Whatdoyouliketodoontheweekend?Ioftendomyhomework.Pla

yrolesWhatdoyouliketodoontheweekend?Ioftenhaveapicnicwithmyfamily.点击画面Goodmorning,Grandpa!Whatareyoudo

ing?Iamdoingexercise.WhatdoyoudoonSaturday?Idosomeexercise,too.Ioftenplayfootball.Let’stalkWhatdoesyourfatherdoontheweekend?Heoft

enclimbsthemountains.Whataboutyourmother?Sheoftendoessomewashing.一般现在时的肯定句中，主语为第三人称单数的动词变化主要体现在词尾的变化上，其规律为：（

1）一般情况下，直接在动词词尾+s。如：play—playswrite—writesclimb—climbs拓展：英语动词第三人称单数变化规则（2）以s,x,sh,ch,o结尾的动词，在词尾+es。如：guess—guessesfix—fixesf

inish—finishesteach—teachesgo—goesdo—does（3）以辅音字母+y结尾的动词，先把y变为i，再加es。如：study—studiestry—triesfly—flies（4）不规则动词（特殊情况）。如：have—has

be—isReadandmatchHi,I’mWuChen!IoftendanceonSundays.Mymotherdoessomecooking.Andmyfatherdoessomewashing.Whatdomygrandpaandgrandmado?Theyofte

nwatchTVanddoexercise.Howhappyweare!