时态专题:过去进行时时态专题:过去进行时目标:1.掌握过去进行时was/were+ving的含义,并能正确使用。2.突破难点过去进行时在含有when和while的时间状语从句中的正确用法。A:What were you doing A:What were you doing from seven to from seven to nine nine yesterday morning?yesterday morning?B:I was B:I was learning Englishlearning English.Were you Were you playing computer gamesplaying computer games?A:Yes,I was./No,I wasnt.A:Yes,I was./No,I wasnt.-what was he doing at 9 yesterday?-He was doing the dishes.-What was she doing?-She was sweeping the floor.-What were they doing