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Questions & Answers about La idea es interesante.
Why is la idea feminine?
How do I pronounce interesante?
Why do we use es instead of está in this sentence?
Could I also say La idea interesante without the verb?
Generally, you'd need a verb to form a complete sentence conveying a state of being. Simply saying La idea interesante on its own wouldn't express the statement that it is interesting. It works as part of a longer phrase—like La idea interesante que tuvimos (the interesting idea we had)—but not as a standalone sentence.
Is always spelled the same for masculine and feminine nouns?