sometime表示百分之幾

sometimes表示百分之三十。

She comes to visit us sometimes.    她有時來訪問我們。

I sometimes think that it is a great mistake.    我有時想這是一個大錯。

It is sometimes warm and sometimescold.    天時熱時冷。

Sometimes I will go to the university for the elderly.

有時我會去上老年大學。