at a time at times in a time on a time的区别是什么

at a time at times in a time on a time的区别是什么
at a time at times in a time on a time的区别是什么

at a time at times in a time on a time的区别是什么
at times:
有时；不时
[例句]
The tide is,at times,very high.
潮水有时涨得很高.
I like Bob but he's very annoying at times.
我喜欢鲍勃,但是他有时也很烦人.
at a time
作“一次,每次”讲,常用于“数词+at a time”的结构中.例如：
Enter two at a time.
每次进来两人.
He checked them off one at a time as they came in.
他们进来时,他一个一个地核对.
注意它与at one time 的区别.at one time一般指“过去某一时期,曾一度(once)”或“同时”的意思.如表示“同时”,则两者可通用.例如：
At one time I used to like her,but not any more.
我曾一度很喜欢他,现在可不喜欢了.
in a time 和on a time 都是在一个时间的意思,另外还有2个短语需要也很重要in time和on time
in time
(1) Before a time limit expires.
及时：在时限到来之前
(2) Within an indefinite time; eventually:
最后,终于：在不定的时间内；最终：
In time they came to accept the harsh facts.
他们最终承认了严酷的事实
on time
(1) According to schedule; punctual or punctually.
按时,准时：按时间表的；准时的（地）
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at times:
有时；不时
[例句]
The tide is, at times, very high.
潮水有时涨得很高。
I like Bob but he's very annoying at times.
我喜欢鲍勃，但是他有时也很烦人。
She calls on me at times...

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at times:
有时；不时
[例句]
The tide is, at times, very high.
潮水有时涨得很高。
I like Bob but he's very annoying at times.
我喜欢鲍勃，但是他有时也很烦人。
She calls on me at times.
她有时来看我。

at a time
作“一次，每次”讲，常用于“数词+at a time”的结构中。例如：
Enter two at a time.
每次进来两人。
He checked them off one at a time as they came in.
他们进来时，他一个一个地核对。
in a time一段时间后；不久；很快地
on time 准时，on a time 不知道呢

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at any time 在任何时候 at a time 一度 on the other hand 另一反面 in the way 挡路，碍事 at any time表示任何时间 at a time 表示每一

at a time 每次 在某时 一次
Let your listener answer one question at a time .
让你的听众一次回答一个问题。
at times有时,间或
Everyone may make mistakes at times.
每个人不时都会犯错误。
in a time 一段在一个时间
on a time在一个时间