I've already had lunch前面的have怎么翻译,后面吃倒很理解.

i've already had lunch中ve指的是什么? I've already had lunch过去完成时,这句短语中请问怎么运用理解啊? I've already had lunch.Have you had lunch yet?这是新概念二第4课的课后练习 I've already had lunch.Have you had lunch yet?这是什么时态呢? 英语翻译I have already had lunch .这是新概念的翻译 我这样翻译“I had lunch alr 新版新概念上写的是i've already had lunch.但是百度词典上写的却是i have had lunch I have already had lunch 是什么结构 We're having lunch I'VE already had lunch I had lunch at hal 英语翻译如 I have already had lunch.l have just had lunch.那l have 我已经吃过饭了为什么是【I’ve already had lunch】?I’ve用在这里好难理解. I have already had lunch.改为否定句. I have already had lunch.(变为一般疑问句）