短语a big deal常被用来形容某人或某个情况、形势非常重要。
- It's obviously a big deal to her to get a promotion first because she can move up in the company faster than anybody else in the team.
- I just couldn't understand why they quarrelled so much over the colour of a picture frame - it's not a big deal!
值得注意的是，短语a big no-no用来形容绝对不能做或不应该做的事情。
- Wearing jeans is a big no-no in a posh restaurant.
- Arriving late and leaving early is a big no-no at our workplace.