Read what he says

If it walks like a duck, looks like a duck, and quacks like a duck, then it is probably a duck

"it is probably a duck" does not really show his real opinion. It sounds like he agreed with you, that was why you are so happy.

But he could very well say it just means "probably".

This guy is really smart.

所有跟帖： 

• 你GRE逻辑题满分吧 -MJ2001- ♀ (0 bytes) () 04/03/2012 postreply 21:33:26

• 这不过是一种委婉的口气罢了。他什么意思很清楚。 -89MM- ♀ (49 bytes) () 04/03/2012 postreply 21:34:11

• 但听者就意会成must了呀 -MJ2001- ♀ (0 bytes) () 04/03/2012 postreply 21:42:31

• 你到网上狗一下，一般的说法是： It must be a duck！ -89MM- ♀ (36 bytes) () 04/03/2012 postreply 21:43:13

• 这不是绅士的问题，你家老那思维逻辑性较强。用must在逻辑上是不准确的，如果是反讽什么的，另当别论 -MJ2001- ♀ (0 bytes) () 04/03/2012 postreply 21:45:42

• 谢谢！还是你懂：） -89MM- ♀ (0 bytes) () 04/03/2012 postreply 21:53:37

• WHAT&WHAT~~人家比较搞笑幽默也有点卖弄啦～晕S～：） -绕绕- ♀ (0 bytes) () 04/03/2012 postreply 22:14:13