I was out of town at the time ,so I don't know exactly how i

来源：学生作业帮编辑：搜搜做题作业网作业帮分类：英语作业时间：2024/04/28 16:37:09

I was out of town at the time ,so I don't know exactly how it _______.
为什么用 happened 而不是 has happened?
现在完成时不能用在过去吗我一直没有弄清楚! 请详细告诉我一下谢谢了

现在完成时顾名思义,到现在已经完成了.它有两层含义1一个动作动过去开始发生一直发生到现在2或是过去发生的动作对现在造成的影响（比如说考试没考好现在郁闷啊）,他是将过去与现在相连接的时态.你们看到它叫做现在完成时,强调的主要是现在.一般过去时就是指过去发生了一个动作,比较单纯了.
现在咱们来分析一下这道题.我当时不再小镇,所以我不清楚他是怎么发生的.I don't know exactly 后面放了一个宾语从句.这件事就是他是怎么发生的,这件事发生在过去我没在小镇的时候,用个一般过去就行了.

I was out of town at the time ,so I don't know exactly how i 1.I was out of town at the time,so I don`t know exactly how i was absent at the time,so i don't know how it ( )加什么?happe -Don't you know our town at all?-No.This is the first time I I don't know how to leave you,and out of nothing at all. 请大家 i don't know it exactly I don't think so.Teachers are n______ any time.they know how I don't know.How can I make the vegetables grow so well? So know,I don't 英语翻译I don't pull cars out of the hole at night .At nighe I f i don't know the (long)of the river. i think the time (spend i don't know the time because i()my watch at home.A.forgot B