Under the DSM-5, there are eight types of substance use disorders that doctors can diagnose. Caffeine is also listed as a substance-related disorder under DSM-5, however, it is not designated as a substance use disorder.2. Alcohol.
adverbs answer the questions-how ,why,when and where.ie,adverb of manner,adverb of purpose and reason,adverb of time and adverb of place.
Adverbs that tell us how often. Adverbs that tell us how often express the frequency of an action. They are usually placed before the main verb but after auxiliary verbs (such as be, have, may, & must). The only exception is when the main verb is to be, in which case the adverb goes after the main verb.