一、核心语义差异
1. on time
-- 强调严格守时（punctuality）
-- 指按照预定/规定时间准时发生
-- 隐含"不早不晚"的时间精确性
2. in time
-- 强调时间充足性（sufficiency）
-- 指在截止期限前完成（可能有时间余量）
...(以上内容有节略,please sign in for more)
主题笔记
word-vs-word-cn
【in time】 —
1. early enough for an activity; before it is too late to do smth.:
- I got there 【in time】 to see several friends I hadn’t seen in two months.
2. in the end; after a while:
- Ted and Jim did not like each other at first but 【in time】 they became close friends.
3. (Music) in the right rhythm:
- You need to play in tune, but what about playing 【in time】 ? Rhythm is part of the musician’s trinity that also includes harmony and melody.
【on time】 —
1. at a prearranged or scheduled time; punctually:
- The train, which was due at four o’clock, arrived exactly 【on time】 .
2. (U.S.) on the installment plan; on credit:
- Everything was bought “ 【on time】 ,” hardly any transactions involved cash.
Note: The expression is not equivalent in meaning to the phrase to time—in conformity with the scheduled time:
- The buses on this route seldom run to time.
See also: on the clock / on the hour.
