一.句子：I am down -> I'm down
二.含义：I agree with you. Mainly used to agree to do something.常用于表达我同意，特别是同意做某事，我加入你这个计划等
三.对话：
A: You wanna go watch the basketball game tonight?
B: You paying？
A：No need~Free tickets!
B: Cool! I'm down!
四.扩展：
1.第一反应见到down,可能会觉得是心情不好，例如I feel a bit down.
2.如果担心说I’m down引起歧义，你不妨换着用下面的这几句话，也是家喻户晓的高频口语句型
① - We are going to go fishing this afternoon, are you in?
- I’m in.
② - We’re gonna have a road trip. Coming with us? - I'm game
除了用I’m in（最普遍，最常用），I’m game，你也可以说I’m up for it。
③ - Mate，you’ re up for the party? - Yeah, I’m up for it!
Thank coach shane
