v.  下赌注；与…打赌

n.  打赌；赌金，赌注

• I bet/I’ll bet 

  我敢肯定，我敢保证；我相信；我想得出

• You bet!  的确！ 当然！ 一定！ 一点不错！

• (do you) want to bet?/wanna bet? 

  赌不赌？ 敢打赌吗？

• a good/safe bet  保险[稳妥]的做法[情况]

• do sth for a bet 

  为打赌而做某事，赌气做某事

• I bet you're looking forward to the end of this month, aren't you? 

• I wouldn’t bet against him winning the championship this year.

  我不会下注赌他今年拿不到冠军。

• A few of us had a bet on who’d get married first. 我们中有些人打赌谁会先结婚。

• How much do you want to bet?

  你想赌多少钱？

• I bet you she won’t come.

  我跟你打赌她不会来的。

• ‘Going to the party on Saturday?’ ‘You bet!’ “星期六去参加聚会吗？”“当然啦！”