course not1 → of course not
2 spoken used to emphasize that you are saying ‘no’ to something 当然不行[没有]〔强调对某事的否认〕 ‘Have you been reading my email?’ ‘Of course not!’ “你一直在看我的电子邮件?”“当然没有!”
‘Do you mind if I bring a friend?’ ‘No, of course not.’ “我带个朋友来你会介意吗?”“当然不会。”
→ of course not/course not at of course(1)