Как написать по английйскому слово long -- во втором числе и в третьем числе

Long (длинный) — is an adjective. Adjectives have degrees of comparison. There are three degrees of comparison. They are Positive, Comparative and Superlative. We form these degrees with the help of suffixes – er and – est and with the help of words more and the most. We use definite article with Superlative degree. We use the suffixes (- er and - est) when adjectives have one or two syllables. We use more and the most when adjectives have more syllables.

Long has one syllable. That’s why we use the suffixes to form Comparative and Superlative degrees.

Long — longer — the longest.