je dois ... means I have to ..., I must ....
You would say "Je dois étudier" in French to mean "I must study."
Eh bien, je dois y aller
Je dois faire mes devoirs. (I have to/need to do my homework)
You can say 'Je dois faire mes devoirs' in French.
Il faut que je vérifie.
I must - je dois
You would say "Je dois étudier" in French to mean "I must study."
je dois means i have
i have is: je dois
je dois y aller, je dois m'en aller
"je dois" I have to leave = je dois m'en aller I have to work harder = je dois travailler plus dur
il faut que je .... or je dois ..
Je dois partir in French means "I must go" or "I have to leave" in English.
Que dois-je faire? in French means "What must I do?" in English.
"Je dois m'en aller maintenant / je dois y aller" means 'I have to go now' in French.
je dois mon thé is the phrase. This means that I have my tea.
"es-tu" means "are you" in French or Spanish, "'(je) dois" means "(I) must" in French but does not mean anything in Spanish. Altogether is means nothing that makes sense.