a) of verbs after which we use an infinitive with the particle to seem, b) of question words after which we use an infinitive with the particle to how, c) of verbs after which an infinitive is used without a particle to make, d) Infinitive of purpose

При переводе частица to переводится как "чтобы"

1. seem, want, hope, intend, learn, decide, mean, offer, pretend.2. how to, where to, what to, when to3. make, help, let; can, must, should, might