Student or Learner
could you please tell me which preposition should be used in connection with "testify" (meaning to be a witness in court?)
E.g.: The witness shall be obliged to testify to/of/about the circumstances of the crime.
Thank you very much.
He testified about their life together.
I've heard both the others, especially about particular things:
He gave testimony of [usually not the verb 'testify'] her absence on the night of the murder.
A neighbour was invited to speak to [sometimes 'testify to'] her good character.
There are exceptions, as you'd expect with me
The half-empty cup of hot tea testifies to the fact that she was here a minute ago.
The half-empty cup of hot tea is testimony of her being here a minute ago.
But these don't refer to the court context.