For the most part, an adverb will end in the letters -ly, however, there are some exceptions to this such as the word fast, which appears exactly as the adjective counterpart for the word but serves as an adverb.

• This is a fast car
• This car can drive fast.

In the first sentence, the word fast is being used as an adjective, however, in the second, it is being used as an adverb. Lets take a look at some further examples of adverbs within a sentence.

• My sister swims badly.
• The soccer match ended quickly.
• Fortunately, my friends were not late for my birthday party.

Adverb Definition and Examples