Please suppose in a dialogue between you and your friend he/she is going to start talking about a matter that you feel bad about it and you want to ask them not to enter that subject. Does the sentence below work naturally in this case:
- We’d better not to enter this subject.
I was wondering if it doesn't sound natural, someone lets me know what is said in this case usually?
Professor: We were talking about the theory of relativity during the last session. We also proved these equations (pointing out to the written list which is appeared on the Video Projector curtain.) There are some related equations too that I like to bring them all up and discuss about them, but we are short of time. We'd better not enter this subject at least now.
Maria and Denis are in love. Once when they are talking about their past evidences, Denis starts to talk about one of his ex-girls and it sounds a bit upsetting to Maria to hear about it. She just says: "If you don't mind, please don't enter this subject please Denis."