2、.A:Isthis / thatyoursister?B:Yes,itis./ No, itisn’t.Ⅱ.Lookatthepicturesonpage49andlearnthenewwordsin 1a.设问导读Ⅰ.Speakoutthefollowingsentences.1.Tomistall.2.Timisshort.3.Juliehaslonghair.4.Lucyhasshorthair.Ⅱ.Askandanswer.1.Describethemselves.A:Whatdoyoulooklike?B:I’mtall.2. D