好多日子的英文：
many a day

参考例句：

Mrs. D'Souza's irate landlady informed Zoe that Mrs. D'Souza's rent was well overdue
德萨扎太太的女房东怒火冲天，她告诉佐伊说，德萨扎太太的租金已拖欠好多日子了。

many是什么意思：
det. 许多，大量；大多数人
pron. 许多；许多人
adj. 许多的

The possibilities are many.
有许多可能。

It has many advertisements and many different sections.
星期日报有很多广告和许多栏目。

There are many, many ramifications and many things we could talk about.
有许多许多的分枝以及我们可以谈论的许多事情。

He was a man of many words and many graphic gestures.
他是一个话多的人，还不停比划着生动的手势。

Many people are immobilized by the illness.
许多患上这种病的人都瘫痪了。

day是什么意思：
n. 一天；白昼，白天；工作日；时代，时期

Things go on day by day.
事情逐日进行着。

Day by day the situation is improving.
情况在一天天地好转。

Like this, day after day.
就这样，日复一日。

It was a fateful day.
那是个不祥的日子。

Meantime, from day to day they endure.
同时，一天天他们捱了下去。