1. As a simple statement of existence:
* है (hai) - This is the most common way to say "is" or "are" in the present tense.
* Example: "You are happy." - "आप खुश है." (aap khush hai)
2. As a question:
* क्या (kya) - This translates to "is" or "are" when used in a question.
* Example: "Are you coming?" - "क्या आप आ रहे हैं?" (kya aap aa rahe hain?)
3. As part of a verb phrase:
* You'll need to use the appropriate verb conjugation depending on the tense and subject.
* Example: "They are eating." - "वे खा रहे हैं." (ve kha rahe hain)
4. As a part of a sentence that describes a state or condition:
* Here, you'll use the appropriate adjective or verb form to convey the meaning.
* Example: "You are tired." - "आप थके हुए हैं." (aap thakhe hue hain)
Remember that Hindi grammar is complex, and the correct translation will depend on the specific context of the sentence.