Usage: Use "phải" whengivinginstructions or expressingwhatneedsto be done. Forinstance, "Bạnphảihọcbài" means "Youmuststudy."
As a ModalVerb (All right)
Meaning: Usedtoexpressagreement or affirmation.
Example: "Phải, anhvề" means "All right, just go home."
Usage: Use "phải" in conversationstoagreewithsomeone or toconfirm a decision.
As a Preposition(Affected by)
Meaning: Indicatesbeinginfluenced or affected by something.
Example: "Phảibệnh" means "to be affected by a disease."
Usage: Youmightusethisformwhentalkingaboutillnesses or conditions. Forexample, "Tôiphảibệnh" means "I am affected by a disease."
AdvancedUsage:
"Phải" can be used in formalcontextstoexpresstheneedforadherencetorules or principles. Forexample, "Chúng taphảituân thủluật pháp" means "We mustcomplywiththelaw."
In philosophical discussions, "phải" mightrefertoethical imperatives, such as "Điềugìlàphải?" whichmeans "What is right?"
Word Variants:
"Phải" can appear in differentforms or phrases, such as: