Question

1. She stood on her hand at the concert.

2. She stood on her hands at the concert.
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Do we have to use 'hand' or 'hands'? Are both Okay? Which one is commonly used?
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English - Writeacher Saturday, December 2, 2017 at 8:01am
I'm not sure what you mean by this. I know of acrobats who stand on their hands in circus or other performances, but I don't know the expression "stand on her hands" at a concert.

Please explain.
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1. After singing a song, she stood on her hand. [She used one hand here.]

2. After singing a song, she stood on her hands. [She used two hand here.]

3. He stood on his hand for a moment.
[He used one hand here.]

4. He stood on his hands for a moment.
[He used both hands here.]
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Are the explanations right?

Answer 1

I still don't understand what you mean by "stood on her hand" or "stood on her hands." Circus performers and those doing gymnastics are two examples, but those don't fit what you're writing above. See these images:
https://www.google.com/search?q=standing+on+one+hand&rlz=1C5CHFA_enUS705US707&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjnxty82fHXAhUh5YMKHbJNCbAQsAQIKA&biw=1437&bih=716

Answer 2

I'm really stumped by what you're trying to say.

Here's the dictionary meaning of the phrase:
https://dictionary.cambridge.org/dictionary/english/stand-on-your-hands-head

So I'm trying to come up with possibilities for you.
<i> After singing a song, she held her hands up high.
At the end of the concert, she applauded with her hands held high. </i>

There's also this expression -- to sit on his hands:
https://idioms.thefreedictionary.com/sit+on+hands
I don't think that's what you're after, though.