Common Mistakes : Bad

 adjective

.BAD: I’m afraid I speak English very bad

.GOOD: I’m afraid I speak English very badly

:Bad is an adjective

.I tried to ignore the child’s bad behaviour

:Badly is an adverb

.The child behaved very badly indeed

.DUBIOUS: Of course, there are also bad things about living in a city

.GOOD: Of course, there are also disadvantages to living in a city

.DUBIOUS: It’s a bad thing that the population is increasing so quickly

.GOOD: It’s unfortunate that the population is increasing so quickly

.The phrase bad thing/s is generally over-used and often sounds unnatural