deep, deeply
deep 具體的深，例：dig deep
deeply 抽象的深，深深地，例：deeply moved
aloud, loud
aloud 出聲地，例：read aloud 出聲地讀
loud 大聲地
worth, worthy
二者均為值得，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.
bad, badly
bad 形容詞，例：go bad
badly 副詞，不好，但與need, want, require連用為“很，非常”，例：I need the book badly.
before long, long before
before long 不久以后;
long before 很久以前;
例：not long before = before long
deep 具體的深，例：dig deep
deeply 抽象的深，深深地，例：deeply moved
aloud, loud
aloud 出聲地，例：read aloud 出聲地讀
loud 大聲地
worth, worthy
二者均為值得，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.
bad, badly
bad 形容詞，例：go bad
badly 副詞，不好，但與need, want, require連用為“很，非常”，例：I need the book badly.
before long, long before
before long 不久以后;
long before 很久以前;
例：not long before = before long