Student or Learner
Are these sentences all right? Thank you, Teacher. Is there any difference "could not remember" and "was not able to remember"?
She told us that she had seen a Chinese doctor once in the New Territories; but she could not remember his name or the clinic.
She told us that she saw a Chinese doctor once in the New Territories, but she was not able to remember his name or the clinic.
There is no difference for me.
Don't use the semi-colon. A comma is correct there.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.