Isn't it? でしょう

If you want to state your opinion and then encourage someone to agree, use deshou. 

フィリピンは暑いでしょう?
firipin wa atsui deshou? 
The Philippines is hot, isn't it?
[You are expecting a 'yes' answer]

痛いでしょう？
itai deshou?
It hurts, doesn't it?
[You see someone who has just slammed their head in the low doorway]  

But usually でしょう is used to mean 'probably':

雨が降るでしょうね。
Ame ga furu deshou ne. 
It will probably rain, don't you think?

And another common usage is どうでしょう meaning 'how about...' or 'what do you think about'

うどんはどうでしょう？
udon wa dou deshou? 
How about some Udon?