occasion
单词辨析：
指能够做某事或容易做成某事的机会，作此义解时常可与 chance 换用；也可指得到工作或提升的机会。
They had no opportunity/chance to escape.
他们没有逃跑的机会。
He has got the opportunity/chance to visit Paris.
他获得了访问巴黎的机会。
There were more opportunities for graduates last year.
对去年的毕业生而言，就业机会要多一些。
指做想做之事的适当时机，侧重指偶然或意外的机会。
It was his only chance of escape.
这是他唯一的逃脱机会。
I never miss a chance to play football.
我从不错过任何踢足球的机会。
He will be a candidate in next week's election, and this is his big chance.
他将是下周竞选的候选人，这是他成功的大好机会。
指合适的机会或有利的时机，通常用单数，常后接介词 for。
This is an occasion for the whole country to celebrate.
这是个举国欢庆的时刻。
It was the occasion for expressing friendship by the two presidents.
这是两位总统表达友谊的时机。
指能够用来做某事的一段时间，多用于口语。
Now is the right time for us to move to New York.
现在正是我们搬到纽约去的好时机。
I'll visit her if I have time.
如果有时间我会去拜访她。
This is no time to switch jobs.
现在不是换工作的时候。
相关例句：
Taking her with me on official occasions has been a challenge
带着她出席正式场合对我来说一直是个挑战。
Inverness, however, rose to the occasion in the second half, producing some of the best football they have played for some time.
然而，因弗内斯队在下半场经受住了考验，踢出了很长一段时间以来的最佳水平。
He argued that the release of hostages should not occasion a change in policy.
他认为释放人质不应造成政策的改变。
He found what he was saying was not proper for the occasion and he stopped short.
他觉得自己说的话不对碴儿，就停住了。
It is an occasion for all the family to celebrate
这是个值得举家庆祝的时刻。
His behaviour was not in keeping with the solemn occasion.
他的举止与这庄严的场合不协调。