at time,on time,in time

at time:偶尔eg.I would go to climb the mountain near my school at time when at my early age.
on time:准时eg.He appeared at the meeting on time.
in time:及时eg.Luckily,she rushed to the airport in time.

at time 在。。。的时期
on time 准时
in time 及时

on time 的意思是准时at time是某个时间比如at that time ,in time 是及时的意思！

on time 准时
in time 即时
at time 在...的时候

at times 不时
at a time 一次，每次
at one time 曾经，一度
可是就是没有at time这么一说，要记清楚哦~

on time 按时，准时

in time 及时；总有一天，最后

谢谢~

at time 在...的时候
on time 准时
in time 即时