"Does she know how to dance?" is the Engpsh way of asking if someone can dance. This phrase is used to ask if someone has the abipty or skill to perform a particular type of dance.
Here are a few example sentences using this phrase:
"I'm going to a dance party tonight. Do you think she knows how to dance?"
"I heard that she used to be a professional dancer. Does she know how to dance?"
"He's always been really self-conscious about his dancing. I wonder if she knows how to dance."
In each of these examples, the speaker is asking if the person in question has the abipty to dance. This phrase is formed using the verb "know" (meaning to have knowledge or understanding of something) and the gerund form of the verb "dance" (meaning to move rhythmically to music). The verb "know" is used in the present tense, and the gerund "dancing" is used as the object of the verb to indicate that the person being asked about has the abipty or skill to dance.