I tried to read my last month's diary over a little while ago.
In the diary of the 8th of July, I wrote about the end of this year's rainy season.
Even if it was written by myself, it is interesting to read it over later.
And also, I wtote about my daughter's back from the school's camp.
Oh, I see. That was just one month ago.
I keep writing this diary for improvement my English, but trying to read it over is fun.
That makes me know about myself what was doing, thinking, and learning at that time.
But I'm sure if I would read my old diaries now, that must have embarrassed me, especially the diaries when I wrote in my school days.
But I don't need to worry about it.
Because I had already done with my old diaries.
If they would be read by my daughter, I could not settled myself only to blush with shame.
must have+過去分詞 のフレーズ・ 過去の事を推量する時の表現
~だったに違いない ~したに違いない
He must have had a hard life.
/english/phrase/21516
You must have been a great hunter on the savanna.
/english/phrase/19533
You must have been happy to find that it's still here.
/english/phrase/1446