英语达人进 我最近遇到一个问题.现在完成时与过去式有什么区别啊?就像 i lost my keys.与i have lo

现在完成时与过去式有什么区别? i have lost my wallet和i lost my wallet有什么区别呀 i lost my key和i have lost my key有什么区别? I lost my wallet和I have lost my wallet 意思上有什么区别 现在完成时与过去式 有什么区别 在什么情况下用完成时,什么情况下用过去式 例如：i bought a c 英语现在完成时与一般过去式的区别 我不懂现在完成时与过去式的区别 I have lost my keys; I can't remember where I left it. I lost my keys ,I have ___(looked,looked for,found,founf out I have been (looking for) my lost keys,but I haven't found t have 加动词过去式与动词过去式有什么区别 现在完成时与过去式的区别