Russell: Did you report that to the police?
Narvick: No, I did not. I knew what wretched things that man Reem had done, and I thought the families deserved to believe he'd been turned to ash, after all they'd been through.
Russell: I bet you also didn't want your-your business to suffer from the reports of your negligence.
Narvick: I volunteered my services free of charge.
The word "bet" is used to express some opinion about the future. It's often associated with gambling or risking something of value.
In these sentences, "bet" is a verb:
Tony bet $20 on a horse at the racetrack.
How much would you like to bet?
I'll bet you ten dollars your team doesn't win.
When used as a verb, "bet" also means that a person has a strong belief that something is true.
I'll bet the price of a gallon of gas will go up this summer.
What do you want to bet if rains tomorrow during the game?
They're betting on a better future in sunny California.
In the next set of sentences and questions, the word "bet" is a noun:
Tony placed a twenty-dollar bet on a horse.
What kind of a bet do you want to make?
Betting isn't allowed in here. (The word "betting" is a gerund in this sentence.)
Note: The word "bet" can be used when saying "You're welcome." When someone says "thank-you," sometimes Americans reply with, "You bet." The contracted form of this is "You betcha." (betcha = bet you)
注意：bet可以在说“不客气”时使用。当有人说“谢谢”时，有时美国人会回以“You bet.”，这是“You betcha.”的缩写形式（betcha相当于bet you）。
A: Thanks for helping me.
B: You bet.