I have had lunch.怎么变成过去完成时变成后是不是：I had had lunch.

英语翻译如 I have already had lunch.l have just had lunch.那l have had lunch.怎么译？ I have had lunch.怎么变成过去完成时变成后是不是：I had had lunch. I have already had lunch 是什么结构 i have alreay had my lunch 【】you [ ]your lunch [ I have had it.怎么变被动语态急 I've already had lunch前面的have怎么翻译,后面吃倒很理解. I have had lunch为什么用两个have? I have already had lunch.改为否定句. I have already had lunch.(变为一般疑问句） I don't have tomatoes for lunch 变肯定句 i feel hungry.let is stop _______ A.havinglunch B .to have lunch C .had lunch D.have lunch I have had lunch at school.对at school提问可不可以填where have you had lunch? Have you had lunch yet? Have you had ( )Lunch?--yes,i had( )good dinner at my friend's house,too 如果一个英国人告诉我I have had lunch at school,我可不可以这么问：where did you have lunch?说错了，英国人说是I have had lunch 我问的是where did you have lunch？ I is eating lunch变成一般疑问句怎么变? I have just had my lunch的句子成分在I have just had my lunch这句话中,I 是主语,have 现在完成时的标志,had lunch 的原型是have lunch 但是是现在完成时,所以have lunch 要变成had lunch ,对吗? I've already had lunch过去完成时,这句短语中请问怎么运用理解啊?其中have or had 第一句中为什么要加have 是因为有already在才多一个have吗?had lunch就是吃过午饭的意思.为什么要多加个have?I had already