DARE + infinitive without TO

[Sitifan]

1. He dares speak loud.
2. Do we dare tell them the truth?
Are the above sentences acceptable?
Thanks a lot for your reply.
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Thank you very much for your reply.

[Mister Micawber]

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#1 is not. We normally use the auxiliary form (without 'to') only for negative and interrogative statements.
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Native English teacher at Mister Micawber's