Future Tense in Hindi
In Hindi, the future tense is formed by adding the appropriate future marker to the verb. Let's explore how to form the future tense of the given sentence "रवि मेरी पुस्तक चुरा चुका होगा" (Ravi must have stolen my book) in affirmative, negative, interrogative, and interrogative negative forms.

Affirmative
To form the future tense affirmative sentence, we need to add the future marker "गा" to the verb. Therefore, the sentence "रवि मेरी पुस्तक चुरा चुका होगा" in the future tense affirmative form would be "रवि मेरी पुस्तक चुरा चुका होगा" (Ravi will have stolen my book).

Negative
In the future tense negative form, we need to add the negative marker "नहीं" before the future marker "गा" in the verb. So, the sentence "रवि मेरी पुस्तक चुरा चुका होगा" in the future tense negative form would be "रवि मेरी पुस्तक चुरा नहीं चुका होगा" (Ravi will not have stolen my book).

Interrogative
To form the future tense interrogative sentence, we need to switch the position of the subject and the verb, and add the question marker "क्या" at the beginning of the sentence. Therefore, the sentence "रवि मेरी पुस्तक चुरा चुका होगा" in the future tense interrogative form would be "क्या रवि मेरी पुस्तक चुरा चुका होगा?" (Will Ravi have stolen my book?).

Interrogative Negative
In the future tense interrogative negative form, we need to combine the rules of forming the negative and interrogative sentences. So, the sentence "रवि मेरी पुस्तक चुरा चुका होगा" in the future tense interrogative negative form would be "क्या रवि मेरी पुस्तक चुरा नहीं चुका होगा?" (Will Ravi not have stolen my book?).
By following these rules, you can easily form future tense sentences in Hindi in affirmative, negative, interrogative, and interrogative negative forms.