96. deep, deeply  

deep 具体的深,例:dig deep
deeply 抽象的深,深深地,例:deeply moved

97. aloud, loud  

aloud 出声地,例:read aloud 出声地读
loud 大声地

98. worth, worthy  

二者均为值得,worth后接doing;
worthy后接to be done, of being done;
例:It is worth visiting. = It's worthy to be visited. = It's worthy of being visited.

99. bad, badly  

bad 形容词,例:go bad
badly 副词,不好,但与need, want, require连用为“很,非常”,例:I need the book badly.

100. before long, long before  

before long 不久以后;
long before 很久以前;
例:not long before = before long