Good bye,lucy 是祈使句吗?

Good bye,lucy 是祈使句吗? lucy,you clean the window.这是祈使句吗?为什么 是say good-bye还是 say goodbye good bye bye bye tonight是什么意思? good bye中间要不要连,是goodbye 还是good bye? 英语—祈使句1.什么是祈使句?2.举几个例子（祈使句）3.It is a good idea to do 是祈使句吗? Good-bye; Goodbye; Good bye这三种都对吗? goodbye中间有连字符吗?是goodbye还是good-bye, 是三个男生唱的,听起来比较温柔,里面就有句是bye bye never say good bye好像是韩国的, 口语化的再见是bye还是good bye?如果没有请自己回答 good bye my love never say good bye She says Good-bye Long Kiss Good Bye good bye是什麼意思? say good-bye to see.good.Bye GOOD BYE KISS