Common Mistakes : Behaviour
Noun
.BAD: We were surprised by their peculiar behaviours
.GOOD: We were surprised by their peculiar behaviour
.BAD: Such a behaviour can easily cause offence
.GOOD: Such behaviour can easily cause offence
Behaviour is an uncountable noun
.BAD: Sometimes Juan has a very strange behaviour
.GOOD: Sometimes Juan behaves very strangely
.GOOD: Sometimes Juan’s behaviour is very strange
.BAD: There are very few people having such a behaviour
.GOOD: Very few people behave in such a way
Instead of using have + behaviour, use behaviour + be or use the verb behave + adverb
.His behaviour is atrocious
.He behaves atrociously