Questions & Answers about הבית גדול, אבל החדר קטן.
Because the prefix ה־ is the Hebrew definite article, equivalent to English the.
- בית = house
- הבית = the house
- חדר = room
- החדר = the room
So in this sentence, both nouns are definite: the house and the room.
In Hebrew, adjectives usually come after the noun they describe.
So:
- הבית גדול = the house [is] big
- החדר קטן = the room [is] small
This is different from English, where adjectives usually come before the noun: the big house, the small room.
In this sentence, the structure is not big house but rather the house is big.