already & have done 怎么区别,都是代表已经发生了啊.可以通用吗

already & have done 怎么区别,都是代表已经发生了啊.可以通用吗 have already 里面的already是什么用法already不是已经的用法了可have done也是已经啊 have done-- 现在完成时 理解这个短语已经做了什么吗?那么过去完成时had done---该怎么去理解呢? have done.have been done .had done.had been done 有什么区别?怎么用?有 62题 不定式to do表示的是已经发生的事情的全过程啊 怎么能选to have done呢? "HAVE FUN DOING STH" 和" HAVE IN DOING STH " 有什么区别?,可以通用吗? l have already done(my homework) all the things should be done have been done already have sth.done 和 get sth.done 有什麼区别吗 see sth. done和find sth. done中的过去分词都是宾补吗?代表某事已经被做? should have done 与would have done有区别吗?有would/should had done may have done might have done区别