please help me with english words formation
of course,there are some rules,but your ability to formate words depends on your feeling of language. 
some people just learn words by heart… 
and i also think that you will never learn words formation without practicing.
hello 
…i hawe one question for u… how i have to know what end of word i should write if i change word from verb to adjective or noun…? for example:
persuade…
persuasion… but maybe it is some rulls or something…because it is wery dificult to know all words formation 
… thanx for your help 
yeah, there are some rules, but sometimes you just have to learn that stuff. if i were you, i would search for some kind of grammar, besouse it’s quite hard to write everything here.