请剖析一下这两个句子：
many's the…
used to show that sth happensoften 很多次；常常
Many's the time I heard her use thosewords. 我不止一次听她说过那样的话。
——《牛津高阶英汉双解词典》
many's the formal + literary
— used to say that something is commonor has happened often很多次，常常（用于指有的事情非常普通或常常发生）
Many's the day we have spent together.[=we have spent many days together] 大家在一块度过了很多天。
Many's the time I've been there.[=I've been there many times] 我去过那儿不少次了。
——《韦氏高阶双解英汉词典》
many’s the time/day etc
used for saying that something hashappened often in the past 有很多时候/日子等
Many’s the night I’ve walked back latefrom town.有很多个夜晚我非常迟才从城里走回来。
——《麦克米伦高阶英汉双解词典》
