oftimes

例句：

1. 1.He often forgets to bring his umbrella when it rains.
   他经常忘记下雨时带伞。
2. 2.She oftimes helps me with my homework.
   她偶尔帮我做作业。
3. 3.They oftimes have dinner together.
   他们偶尔一起吃晚饭。