bad awful terrible主要区别bad awful terrible区别他们有什么主要的区别?

根据下面的解释就可以看出区别，各词的英文解释如下：
bad:
adj
not good; of poor quality; inadequate; inferior
bad light for reading
lacking skill or talent; incompetent
bad at sports
harmful
smoking is bad for you
immoral; evil
a bad life
naughty; mischievous; disobedient
a bad child
rotten; decayed; spoiled
a bad egg
severe; intense
a bad headache
incorrect; wrong; faulty
bad pronunciation
ill or in pain (esp in the phrase feel bad)
regretful, sorry, or upset (esp in the phrase feel bad about)
unfavourable; distressing
a bad business
offensive; unpleasant; disagreeable
bad temper
not valid or sound; void
a bad cheque
not recoverable
a bad debt
good; excellent
n
unfortunate or unpleasant events collectively (often in the phrase take the bad with the good)
an immoral or degenerate state (often in the phrase go to the bad)
the debit side of an account
£200 to the bad
adv
badly
to want something bad
awful:
adj
nasty or ugly
inspiring reverence or dread
overcome with awe; reverential
adv
(intensifier)
an awful cold day
terrible:
adj
very serious or extreme
a terrible cough
of poor quality; unpleasant or bad
a terrible play
causing terror
causing awe
the terrible nature of God
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程度不同
bad 小于awful 小于 terrible