Unit 4 Goodbye Get up,David.All right.Go to school now,Nancy.Ok,Dad.GoodbyeGo home now,David.All right.See you,Miss Li.Go to bed now,Nancy.Ok.Goodnight,Mum.1.告别语:再见告别语:再见Goodbye(比较正式比较正式)Byebye ByeSee you(后面可以跟上时间的长短)(后面可以跟上时间的长短)2.晚安晚安Good night.3.回答别人:好的回答别人:好的All right.Ok.Summary