on time是准时的意思 即刚好在约定的时间完成约定的事情 in time是及时的意思 即在情况或许会变坏之前完成了约定的事情
on time是准时,按时的意思
【例】:I finish homework on time.
我按时完成作业
in time是及时的意思
【例】: He got up late this morning, but he caught his bus in time.
他今早起床晚了,但是他及时赶上了公交车
望采纳,谢谢(ฅ>ω<*ฅ)
on time 按时,准时; 以分期付款方式; 正点; 顺时
in time 迟早; 最后; 及时; 经过一段时间之后
on time 准时
You must be at the meeting on time.
你必须准时参加会议。
in time 及时
He got up late this morning, but he caught his bus in time.
他今早起床晚了,但是他及时赶上了公交车。
on time准时和in time在某一时间