Adverbs of Frequency

Adverbs of frequency include; always, constantly, continually, frequently, infrequently, intermittently, normally, occasionally, often, periodically, rarely, regularly, seldom, sometimes etc. For example:
I always do my homework on time.
I often study after class.
The Rules of Adverbs
These simple rules for adverbs of frequency which will help to use them correctly:
• Always use adverbs of frequency to discuss how often something happens.
• Adverbs of frequency are often used to indicate routine or repeated activities, so they are often used with the present simple tense.
• If a sentence has only one verb, place the adverb of frequency in the middle of the sentence so that it is positioned after the subject but before the verb. For example:
Tom never flies. He always takes the bus.
• When a sentence contains more than one verb, place the adverb of frequency before the main verb. For example: They have often visited Europe.
• When using an adverb of frequency in the negative or in forming a question, place it before the main verb. For example: Do you usually get up so late?