an adverb is a part of speech that modifies or describes a verb, adjective, or another adverb. It is used to indicate when, where, how, or to what extent something happens. In this capacity, 'badly' is used to describe an action or to how something was done in a negative manner.
if used with a verb be, use 'bad' instead. (Ex
She feels bad.) If modifying a verb, place 'badly' after the verb. (Ex
I drive badly.)
1. He did his work badly.
2. She sang badly off-key.
3. My brother prepared the presentation badly.
'badly' can also be used as an adjective when describing a situation and is sometimes shortened to 'bad'. (Ex. We had a bad time at the party.) When using 'badly' as an adverb, it is important to take note of the terms 'bad' and 'badly'; particularly when used with a verb, like 'feel'. To describe how a person feels, 'bad' is used (She feels bad). Meanwhile, when referring to how someone is doing something, 'badly' is used (She sings badly).