ad.

1. 壞；拙劣地
   She sings badly.

   她唱得不好。

2. 邪惡地；罪惡地
   To steal is to act badly.

   偷竊是惡劣行為。

3. 不利地；有害地
   He spoke badly of his boss.

   他說他老板的壞話。

4. 不正確地
5. 嚴重地；厲害地
   My back hurts badly.

   我的背疼得厲害。

6. 【口】很，非常
   She wants to go badly.

   她很想去。

adv.

1. in a bad manner.
2. severely; seriously.
3. very much.