Frequency Adverbs 1 Frequency adverbs usually go just before the main verb (or after am, is, are, was, were) - mid-position.
Frequency adverbs 4 When talking about life experience, never and ever are often used with present perfect tense.
Frequency adverbs 2 Frequency adverbs are most often used with present simple tense.
Frequency adverbs 3 Hardly and ever can be separate adverbs, but it is better to consider hardly ever a frequency adverb.
Frequency Adverbs 5

In negative sentences, frequency adverbs usually follow not or negative auxiliary (here doesn't).

Frequency adverbs 6