HE is having an affair.have是什么成分?

HE is having an affair.have是什么成分? 将he is having an apple改为过去式 He is having an affair..为什么不说 He has an affair. Jim is going to Beijing on the train.He is having an e___ time回答吧 He is having a good _____as an old teacher,he is respected by his studentsA、knowingB、having knownC、knownD、to knew He is quoted as having said that there would be an election this autumn.as having said 在这儿起什么作用？ Where is Xiao Ming?He's having ____ rest over there.A.a B.an C.the D.不填 He is an English He is having breakfast right now.(already) He is having lunch 改为一般疑问句 He is having breakfast right now(already) ___ an engineer,so he know exactly what to do.a.Being b.Having been c.As d.He is选择哪个?怎么分析? 变成现在完成时 he is having breakfast ..he is having breakfast ..变成现在完成时 he is an american=he is ( ) ( ) Kitty is having an English lesson in the classroom.(划线提问) 划线部分:having an English ____ he ___ (work)?_No ,he is having a rest. Tom with his classmate is having an english lesson now 这里为什么用　is having?