Adverb of frequency can be divided into two groups:
- Those with the idea of definite frequency, such as every day, annually, and twice a week.
- Those with the idea of indefinite frequency, such as always, rarely, and never.
Pattern to remember
- Definite frequency adverbs usually go at the beginning or end of the sentence or clause.
Incorrect: The manager checks every day the production levels.
Correct: The manager checks the production levels every day.
Indefinite frequency adverbs come after the verb be.
Incorrect: He usually is very friendly.
Correct: He is usually very friendly.
Indefinite frequency adverbs precede all other verbs, or, if the verb is preceded by an auxiliary, they go after the first auxiliary.
Incorrect: This flight leaves always on time.
Correct: This flight always leaves on time.
Be aware of the subtle differences in the meaning of the various adverbs.
Incorrect: There is yet time to correct that error.
Correct: There is still time to correct that error.
Certain indefinite frequency adverbs can go at the beginning or end of a sentence or clause. These include frequently, generally, occasionally, often, sometimes, and usually.
Incorrect: Always I eat lunch in the office.
Correct: Usually I eat lunch in the office.