" I almost told your brother, " Hermione snapped, " Percy -- he's a prefect, he'd put a stop to this." Harry couldn't believe anyone could be so interfering. " Come on, " he said to Ron.
He favoured me with a quizzical smile. " Hump, I have studied some grammar in my time, and I think your tenses are tangled. 'Was mine, ' you should have said, not 'is mine'."