'please'

In Czech please (prosim) has many uses but in English it doesn't.

Be careful not to use it instead of 'you're welcome' (useful to know when serving drinks/food):

a: Can I have a coffee, please?
b: Here's your coffee
a: Thankyou very much
b: You're welcome (not please)

Be careful not to use it instead of '(I beg your) pardon' or 'could you repeat that?':

a: Do you have the time, please?
b: Pardon (not please)
a: Do you have the time?
b: Yes, it's half past four