谁的日记用英语怎么说

日记的英文是 "diary"。它来源于拉丁语 "diarium"，意思是"日常记事"或"每日记录"。
例句：
I keep a diary to record my thoughts and feelings.
我写日记记录我的想法和感受。
She found her old diary from when she was a teenager.
她找到了她青少年时期的旧日记。
He wrote in his diary every night before going to bed.
他每晚睡觉前都会写日记。