我对英语的时态总是不明白比如

英语最基本的时态有八种,在初中阶段都会碰到,你的这句话里面因为有个am,这个词是be动词,be动词后面的动词eat可以用eating,这就形成了be动词+动词的ing形式,在英语中叫做现在进行时,表示一个动作现在正在发生或者一个...能不能用一句话为例，写出这八种时态？还有，I had eaten dinner这句话怎样翻译？非常感谢！一般现在时：we often eat dinner一般过去时：we ate dinner at 8 o'clock yesterday.一般将来时：we will have dinner at 8 o'clock tonight.过去进行时：we were having dinner when my friend came现在完成时：we have eaten three apples since this morning.过去完成时：we had eaten our dinner when my parents got home.过去将来时：our boss told us that he would have dinner with us tonight.had done这种形式是过去完成时，一般是发生在过去时间的过去，翻译成“我已经吃过饭了”