Questions & Answers about Questa macchina è rossa.
Why do we use questa instead of questo?
Why is the color written as rossa rather than rosso?
Just like questa, adjectives in Italian change their endings to match the noun they describe. Because macchina is a feminine word, the basic masculine adjective rosso changes to the feminine form rossa.
Why is there an accent mark on è?
The accent mark tells us that è means "is", which comes from the verb essere. Without the accent mark, the word e simply means "and".