Use

Unlike adverbs of definite frequency, we use adverbs of indefinite frequency to state in general terms how often something happens.

Example:

My mom and I sometimes talk night long.

Explanation:

The adverb of indefinite frequency sometimes is used because we are talking generally about how often ‘my mom and I’ speak.

How to build

Adverbs of indefinite frequency are usually placed in the middle of a sentence, often before a verb.

• I always brush my teeth in the morning and afternoon.

However, the adverbs sometimes, occasionally, often, frequently, and usually are often placed at the beginning or end of a sentence:

• I go to the swimming pool sometimes.

More Examples

• I usually wake up before the alarm rings.

• Children rarely like to eat vegetables.