here is a sentence in a dialogue , "GOOD afternoon , I've come to return your pan. Thank you very much for lending it to me .here speaker is talking with 对方（顺便也翻译一下这个单词，还有这里的顺便怎么翻译） why does the writer use the present perfect tense " I 've come to return your pan " why not use the general tense
热心网友
here is a sentence in a dialogue , "GOOD afternoon , I've run in/dropped in (顺便run in/drop in）to return your pan。 Thank you very much for lending it to me 。here speaker is talking to the listener( 说话人对应于听话人）,why does the writer use the present perfect tense " I 've come to return your pan " why not use the general tense 对于I 've come to return your pan ， come是短暂性动词，来了就是来了，没有来就是没有来，当说话人见到听话人时候肯定已经完成了come这个动作，用完成时也是习惯用法，如果用现在时也可以，但完成时态口语中更实用。。
热心网友
口语，没那么多的规范哪。别这么顶真
热心网友
用现在完成时表示来归还笔的行为已经完成了，如果用一般现在时不能表示已经完成。 here speaker is talking with the master顺便：by the way