Write a sentence about the situation using modal verbs!
My friend didn't hear me when I called her back. She forgot her purse.
I'm sorry but I don't even know how to get started with this example. I don't actually understand what's the speaker is trying to say with these two sentences.
("She has forgotten her purse" would have been better)This means:
Your friend left her purse behind, with you. (She forgot her purse).
You called here back. (to get her purse).
But she didn't hear you.
If you want to add some modal verbs, you could say:
My friend could not hear me, when I called her back. "Could" is a modal. "did" isn't.
"My friend couldn't have heard me" or "My friend must not have heard me"
Oh, I get it now.
Thank you very much for the explanation.