chance, opportunity, occasion
chance ： 侧重指偶然或意外的机会，有时也指正?；蚝玫幕?。
opportunity ： 侧重指有利或适合于采取行动，以达到某一目的或实现某种愿望的最佳时机或机会。
occasion ： 指特殊时机或良机，也指时节。
chance on 或 chance upon
While in Paris we chanced on two old friends.
as chance would have it
by any chance
were you looking for me by any chance?.
chance one’s arm (或 luck)
chance would be a fine thing
on the (off) chance
stand a chance
his rivals don’t stand a chance.
take a chance (或 chances)
take one’s chance
They met by chance on a plane.
Is he, by chance, her brother?
on the off chance
1. Good luck is when an opportunity comes along and you’re prepared for it.
2. The opportunity had gone. His mind scrabbled for alternatives.
3. First-generation Americans view the United States as a land of goldenopportunity.
4. The owners don’t want to overlook any opportunity to make a buck.
5. Their colleagues insulted them whenever the opportunity presented itself.
6. Take the opportunity to plunge yourself into your career.
7. Grey took every opportunity to lambast Thompson and his organization.
8. If you don’t do it soon you’re going to lose the opportunity.
9. The king said there was now a window of opportunity for peace.
10. There’ll be ample opportunity to relax, swim and soak up some sun.
11. His opportunity to re-establish himself had been nobbled by the manager’s tactics.
12. You have single-handedly ballsed up the best opportunity we’ve had!
13. Laura flits about New York hailing taxis at every opportunity.
14. Trendy teachers are denying children the opportunity to study classic texts.
15. Diana is taking the opportunity to wrap up the family presents.
1. They had met by chance at university and finished up getting married.
2. If cancers are spotted early there’sa high chance of survival.
3. He did not get a chance to deepen his knowledge of Poland.
4. He has almost certainly blown his chance of touring India this winter.
5. There is a chance of sunny spells in the West.
6. In general, incumbents have a 94 per cent chance of being reelected.
7. He decided no assassin would chance a shot from amongst that crowd.
8. They have a more than even chance of winning the next election.
9. Whenever I get the chance I go to Maxim’s for dinner.
10. He has probably said goodbye to his last chance of Olympic gold.
11. At least they have a real chance to find work.
12. We took a chance and we’ve won. It’s very gratifying.
13. Her independence and maverick behaviour precluded any chance of promotion.
14. I seized the chance to interview Chris Hani about this issue.
15. He doesn’t stand a ghost of a chance of selling the house.
1. On one occasion, his father threw a radio at his mother.
2. The good weather helped to make the occasion a resounding success.
3. It is always an important occasion for setting out government policy.
4. On another occasion I answered the phone and the line went dead.
5. How can anyone look sad at an occasion like this?
6. I would like it to be an informal occasion.
7. It is, however, necessary on occasion to work outwith these hours.
8. He treated them seriously and, on occasion, entertained them hilariously.
9. There was a touch of triumphalism about the occasion.
10. All the old crowd have come out for this occasion.
11. The coronation was an occasion for extravagant myth and sentiment.
12. The meal gave the occasion an almost festive air.
13. He could also turn on the style when the occasion demanded.
14. But he could also turn on the style when the occasion demanded.
15. Enthusiastic applause lent a sense of occasion to the proceedings.