Matching Pairs INFINITIVES Online version 1st grade JH by Zyanya Rioja 1 Infinitives have two forms: 2 it is forbidden 3 There are three uses of the word to before the Infinitive: 4 We use Infinitives without the word to when they come after modals: 5 You should to play in the park right now. 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 with to before the verb, and without to. Can, could, may, might, shall, would, should, and must. study to get a 10 at the exam.