And now i don't know what does the replier meant by "both are non assertive sentences". I don't have any idea about what
There is no requirement in those sentences to use either one or the other form of dare.
You are free to choose whichever you like, because both are in non-assertive clauses (questions, negatives, or hypotheticals in form or meaning).
If you dare breathe a word / If you dare to breathe a word
None dare speak freely / None dares to speak freely
The assertive form almost always occurs with the full verb.
He dares to speak up in class (and so do I).
*He dare speak up in class (and so dare I).
This is a link to a writing site at Purdue University (Indiana, US). I think a "declarative" sentence is just another name for an "assertive" sentence, a statement of fact. " seems like an assertive/declarative sentence to me.
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This is a link to a writing site at Purdue University (Indiana, US). I think a "declarative" sentence is just another name for an "assertive" sentence, a statement of fact.
"He dares to speak up in class..." seems like an assertive/declarative sentence to me.
"He dare speak up in class..." does not. It isn't a complete sentence. You need the "to" and also need the "s" at t