Unit 4 Lesson 22 At the Supermarket 课件3冀教版四年级上册英语Lesson22AttheSupermarketbegoodatbegoodat擅长;健;精通;熟谙例句:Agoodlistenermustbegoodataskingquestions.一个好的聆听者应该善于问问题。例句:Begoodatcommunicatingandexpressing.善于与人交往及沟通,善于表达.Agoodlistenermustbegoodataskingquestions.一个好的聆听者应该善于问问题。bebadat不擅长例句:Ipretendedtobebadat...