leave是瞬间动词啊可以用was leaving吗?As my father(leave适当形式) the house,the postman arrived 我看了看大家都用was leaving我认为应该是用将来表示这个动作

leave是瞬间动词啊可以用was leaving吗?As my father(leave适当形式) the house,the postman arrived 我看了看大家都用was leaving我认为应该是用将来表示这个动作 瞬间动词能用在现在完成时吗?如：finish,go ,leave.这些瞬间动词可以用在现在完成时吗?1.我看到很多句子是可以,是不是,后面跟for+一段时间就不可以啦?不能用瞬间动词了?2.operate 是延续性动词 please remenber to say good bye to Mr.smith when you leave tomorrow为什么用leave而不用will leave?是否和leave是瞬间动词有关呢？ leave 是瞬间动词吗?能用在现在完成时吗 您好!为什么While linda was buying .这里可以用瞬间动词. 我从未离开过我的国家 中译英如果用leave的话,时态怎么处理.have never left 对吗,leave 不是瞬间动词，可以用完成时吗? As my father was leaving the house,the policeman arrived.这句句子中从句为什么要用过去进行时态?leave不是瞬间动词吗?瞬间动词好像不能用进行时态的吧? hope是瞬间动词还是延续动词是不是任何动词都可以用在be动词的后面 过去进行时的主句都是was/were+doing从句是延续性动词时when/while都可以用,并且动词要用现在分词,从句时瞬间性动词时用when+一般过去时. 瞬间动词改延续性动词 borrow die leave begin join 有since的主句中,是用延续性动词,还是用瞬间性动词,还是两种都可以?例：The boy has started to play football since he was at the age of three.句中可以用started to play 这种瞬间性的动词吗? 瞬间动词是啥 begin 是瞬间动词 为什么还有had begun的用法?begin既然是瞬间动词,为什么还可以用在完成时态中? John,you can’t go out to play until your homework ____ (finish）用has been finished可是finish是瞬间动词啊?不是瞬间动词不可以用于完成时态吗 英语翻译leave这个瞬间动词怎么处理,为什么, I have been playing computer since I was 5.这里为什么用was不应该有became吗?was应该不是瞬间动词啊 take是瞬间动词吗 arrive是瞬间动词吗