1.一般情况下badly的比较级是worse; 最高级是worst;如：
I didn't do it very well, but, if anything, he did it worse than I did.
我干得不太好，但其实他干得比我还糟。
It's raining worse than ever.
雨下得比以往都大。
If you want a safe investment, you could do a lot worse than put your money in a building society.
你要想投资而不冒风险，倒不如把钱存到房屋互助协会。
He was voted the worst dressed celebrity.
大家一致认为他是衣着最差的名人。
Manufacturing industry was worst affected by the fuel shortage.
制造业受燃料短缺的影响最为严重。
2. badly表示“迫切地，急切地”含义是，按照英语惯用法,当badly 的比较级与 need 、want连用时,就需要采用more badly的形式,而不采用worse(
I really need that job more badly than you.
我比你更加迫切地需要这份工作。
3. 当 badly 作“坏”“不好”“严重”解时,是个方式副词,因此常常放在实义动词之后,如：
He slept very badly.他睡得很不好。
He behaved badly. 他的行为很糟。
但是,当 badly作“迫切地"解时,就常常放在实义动词之前。如：
The boy badly wants anew bicycle.
这个男孩急切地需要一辆新自行车。