keep diaries /keep a diary' 哪个对？ it's good for us to keep diary...

keep diary\u4e0ekeep a diary\u7684\u533a\u522b\uff08\u53ef\u4e3e\u51fa\u4f8b\u53e5\uff09

\u575a\u6301\u5199\u65e5\u8bb0\u7684\u610f\u601d\u3002\u7b2c\u4e00\u4e2a\u662f\u6cdb\u6307\uff0c\u7b2c\u4e8c\u4e2a\u662f\u7279\u6307\u3002

\u7b54\u6848\uff1adiaries \u7531\u6c49\u8bed\u63d0\u793a\u53ef\u77e5\u7528diary\u8868\u793a\u65e5\u8bb0\uff0c\u5199\u2026\u65e5\u8bb0\u53ef\u7528keep a/an\u2026diary\u6216keep\u2026diaries\u6765\u8868\u8fbe\uff0c\u6b64\u9898\u8868\u793a\u5199\u82f1\u8bed\u65e5\u8bb0\uff0c\u4e14\u9898\u4e2d\u6ca1\u6709\u4e0d\u5b9a\u51a0\u8bcd\uff0c\u6240\u4ee5\u7528diaries\uff0e

“有一天想起”的是对的，keep a diary
并不是加上复数，就等于每天都写日记，这里的dairy不能当作一篇一篇的日记来看待，而是做一个概念，“记日记”来看的。

keep a diary意思是“记日记、写日记”。

在此基础上，你可以变换形式。

keep diaries表示常写日记，写很多日记等。

keep a diary
v.
写日记

keep diaries
表示每天都写，强调记日记的习惯性

扩展阅读：韩国macbookpro ... earth-shattering ... kate spade ... discussion ... above ... seem to be ... write a diary ... keep guard at the door ... wondering ...