1.本课课程的讲述的是Is that you, john?是你吗,约翰?
2.本课的语法要点是by the way,它的含义是顺便地,附带说说;随便一提。I don't know when I'II finishe. Oh, and by the way, my wife wants to know if Mary needs and help.我不知道什么时候结束。哦,顺便说一下,我妻子想知道玛丽是否需要帮助。
3.By the way, I'm your number-one fan.顺便说一句,我是你的头号粉丝。说到某一件事时,顺带说一句用by the way。