Du new mon doesn't make sense in french. However, if you speak it aloud it sounds very like the french word denouement.
The precise English translation is the same word - one of the many words we borrowed from the french. The literal meaning in french is untying (as in a knot) but the common meaning in both languages is the resolution of the twists and turns in the plot of a play. It's the bit where we find out whodunnit.
Mon patron is "my boss" in French. In French, the word is never used to mean 'customer'.
The French phrase "mon frère" means "my brother" in English.
Ma (followed by a feminine noun) means "my" in English. It is a possessive; the masculine is 'mon', the plural for both is 'mes'.
être mon amour means 'to be my love' in French.
My is an English equivalent of 'mon'. The French word is pronounced 'moh'. It's the masculine form of an adjective. The femiinine equivalent 'ma' is pronounced 'mah'.
mon grand-père means my grandfather in French
Mon enfant in French means "my child" in English.
Mon gars means something like guy, chap
"My mother, my..." is a literal English equivalent of the incomplete French phrase ma mère, mon... . The statement may be completed thus in French, ma mère, mon parent, to mean "my mother, my parent" in English. The pronunciation will be "ma mehr mo pa-raw" in French.
Je t'aime mon frère
masculine- 'avec mon cheri' or feminine- 'avec ma cherie'
Mon cahier de [...] means "my [...] notebook" in English.