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Lesson19Tiredandthirstytired累，疲乏thirsty渴boy男孩children孩子们icecream冰淇淋sitdown坐下1.Whydothechildrenthanktheirmother?Becausetheirmotherbuystwoicecreamsforthem.2.Arethechildrentiredandthirsty?Yes,theyare.3.Isthatmananicecreamman?Yes,heis.4.Aretheicecreamsnice?Yes,theyare.5.Arethechildrenallrightnow?Yes,theyare.Lesson20Lookatthem!big大的heavy重的grandfather祖父，外祖父Lookattheshoes.Theyareclean.Lookatthem.Theyarehot.Lookatthem.Theyarefat.Lookattheshoes.Theyarebig.Lookatthem.Theyareopen.Lookatthem.Theyareheavy.Lookatthem.Theyareold.Lookatthehats.Theyareold.Lookatthem.Theyareshort.Lookatthem.Theyareshort.Ex.A用am,is或are填空areisisareareamEx.BArethechildrentiredorthirsty?They’renottired.They’rethirsty.2.Arethepostmencoldorhot?They’renotcold.They’rehot.3.Arethehairdressersthinorfat?They’renotthin.They’refat.4.Aretheshoessmallorbig?They’renotsmall.They’rebig.5.Aretheshopsshutoropen?They’renotshut.They’reopen.Ex.B6.Arehiscasesheavyorlight?They’renotheavy.They’relight.7.Aregrandmotherandgrandfatheryoungorold?They’renotyoung.They’reold.8.Aretheirhatsoldornew?They’renotold.They’renew.9.Arethepolicemenshortortall?They’renotshort.They’retall.10.Arehistrousersshortorlong?They’renotshort.They’relong.
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