It means 'in my bag' in French. Dans mon sac j'ai ... means "In my bag I have ..."
In my satchel. Dans, In. Mon cartable, my satchel.
"Welcome to my" in French is "Bienvenue chez moi."
"l pleur de mon cour" doesn't mean anything in French. But "Il pleut dans mon coeur" means 'it is raining in my heart".
"Dans mon opinion" or "De mon avis"
My sort of thing - as in, Football? That's not my sort of thing.
"Il y a un livre dans mon bureau."**Or, if you mean a student's desk at school, Il y a un livre dans mon pupitre.**
dans mon placard means 'in my cupboard' in English.
dans mon zoo
dans mon sac
"Always in my heart" is an English equivalent of the French phrase toujours dans mon coeur.Specifically, the adverb toujours means "always." The preposition dans means "in." The masculine possessive adjective mon means "my." The masculine noun coeurmeans "heart."
dans mon lit dormir