3 With compound tenses, they are placed after the first auxiliary, or, with interrogative verbs, after auxiliary + subject: He can never understand. You have often been told not to do that. Have you ever ridden a camel? Exceptions (a) used to and have to prefer the adverb in front of them: You hardly ever have to remind him; he always remembers. (b) Frequency adverbs are often placed before auxiliaries when these are used alone, in additions to remarks or in answers to questions: Can you park your car near the shops? ~ Yes, I usually can
