LESSON 16门248 d 秘书249 sekrtri篮子250 bskt 碗251 bl苹果252 pl桔子253 rnd 房子254 has在.附近255ni河256riv树 257tri:句型练习句型练习1 A:Is there a man at the door?B:Yes,there is.A:Is there a man at the desk?B:No,there isnt.2 A:Theres a man at the door.B:Is there?Who is it?A:Its the postman.（With pictures 51 and 52）3 A:Is there a basket on the floor?B:Yes,there is.A:Is there a basket on the table?B:No,there isnt.4 A:Theres a basket on the floor.B:Is there?Is it an old one？A:Yes,it is,（With pictures 53 and 58）非常感谢！
