frère.
"my heart is with my son"
"le petit-fils de mon père est mon (fils // neveu)" in French means 'the grandson of my father is my (son // nephew)' in French.
mon fils est très malade
It means: "My heart is with my son." I think that's right, but it might be boy not son. Hope I helped.
How about: "Mon fils Robert est un adolescent." That means "My son Robert is a teenager."
"Mon professeur est" translates to "My teacher is" in English.
mon adresse est.....
Mon surnom est...
Où est mon crayon? Where is my pencil?
"mon prénom est" means "my first name is".
Mon amie est infirmière.