jack is been coming on to Mary 和jack is coming on to Mary有什么区别 为什么前面要个been如果要我自己说的话 我肯定只会说后面的样子 因为我不知道什么情况下需要加个BEEN 有懂英文的教教我吗?是句型

jack is been coming on to Mary 和jack is coming on to Mary有什么区别 为什么前面要个been如果要我自己说的话 我肯定只会说后面的样子 因为我不知道什么情况下需要加个BEEN 有懂英文的教教我吗?是句型 选择题;Here __the trolley bus.A.is coming B,comesC,has come D,has been coming when Jack hears that--is coming soon,he goes to board the plane ... Jack is coming back here to _____ something to eat.A.has B.have C.had (1/2)Here _ the bus A.is coming B.comes C.has come D.has been coming here the taxi A.is coming B.comes C.has come D.has been coming 请问选哪个. Jack with Tom to the party next Sunday. A:comes B:came C:is coming D:come选择题 谁帮我分析一下这个句子的成分,句型,谢谢jack is always coming late to school. a jack has been unplugged Jack is 40 and he feels his career as___actor is coming to ____end.A/;an B.the;an C.an;an D.an;/ The moment I looked forward to _____.A.coming B.is coming C.would come D.have been come要讲解的哟! Spring is coming summer vacation is coming! Summer is coming summer is coming? Is my happiness coming Is my happiness coming The spring is coming