……
Questions & Answers about La casa è sostenibile.
Why is the article la used in the sentence "La casa è sostenibile"?
The article la is the feminine singular definite article in Italian. It is used because casa (house) is a feminine noun, so la correctly marks its gender and number.
What form of the verb essere is used in this sentence, and what does è mean?
The verb è is the third person singular present tense of essere, which translates to is in English. It serves as a linking verb, connecting the subject casa to the adjective sostenibile.
Does the adjective sostenibile agree with the noun casa in terms of gender and number?
Yes, it does. Although many Italian adjectives change form to agree with the noun’s gender and number, sostenibile is invariable between masculine and feminine in the singular form. Since casa is feminine and singular, sostenibile is correctly used here.
What is the sentence structure of "La casa è sostenibile"?
The sentence follows the standard Italian structure of Subject-Verb-Predicate. La casa functions as the subject, è is the linking verb, and sostenibile acts as the predicate adjective describing the subject.
How would you modify the sentence if you wanted to say "The houses are sustainable"?
To form the plural, you need to change the article, noun, verb, and adjective to their plural forms. La casa becomes le case (feminine plural), è changes to sono (third person plural of essere), and sostenibile becomes sostenibili. Thus, the plural sentence is: Le case sono sostenibili.
More from this lesson
AI Language TutorTry it ↗
“What's the best way to learn Italian grammar?”
Italian grammar becomes intuitive with practice. Focus on understanding the core patterns first — how sentences are structured, how verbs change form, and how words relate to each other. Our course breaks these concepts into small lessons so you can build understanding step by step.
Sign up free — start using our AI language tutor
Start learning ItalianMaster Italian — from La casa è sostenibile to fluency
All course content and exercises are completely free — no paywalls, no trial periods.
- ✓ Infinitely deep — unlimited vocabulary and grammar
- ✓ Fast-paced — build complex sentences from the start
- ✓ Unforgettable — efficient spaced repetition system
- ✓ AI tutor to answer your grammar questions