Relier Pairs INFINITIVES Version en ligne 1st grade JH par Zyanya Rioja 1 You should 2 We use Infinitives without the word to when they come after modals: 3 it is forbidden 4 There are three uses of the word to before the Infinitive: 5 Infinitives have two forms: with to before the verb, and without to. 1. To indicate an intention 2. After specific main verbs like agree, forbid, fail, begin, choose, decide, prepare, try, want, etc. 3. After specific adjectives study to get a 10 at the exam. Can, could, may, might, shall, would, should, and must. to play in the park right now.