Hi , well, my answer is very common, I`d like to know where and when I can use "off". It`s a question that I always I`ve had it...
that's a problem I come across with my student a lot as well. Most of the times it's in connection with a verb. And with those 'proverbs' you don't have much choice but to learn them by heart.
Examples: to cut off sth with scissors, to tell sb off = tell sb they did something bad, to turn off the TV, etc.
A lot of times when you use 'off' it implies that you somehow separate sth. But sometimes there is only one 'f' when you might expect an 'off', like:
to get rid of sth.
The only advice I can give you is: when in doubt, look it up in the dictionary and learn it by heart, as there is now proper rule that applies which would tell you that you only use a certain preposition with a certain word. It all depends on the context.
By the way, it wasn't an answer you had, but a question