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Both are in common use, I think, Torsten-- I at least use it both ways…I think. Swan says that ‘dare to’ is the commoner, and that ‘dare’ occurs more often in some set situations (like ‘I daresay’).
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Hi,
“Dare” can be used in two ways:
1.As an ordinary(main) verb, followed by the infinitive, is most common:
She didn’t dare to tell him what had happened.
2.As a modal auxiliary, followed by the infinitive without to, is least used:
I daren’t look.
However, mixed ordinary+modal structures are occasionally found:
He didn’t dare open his eyes.
Hope this helps,
Morteza