2.1 Infinitive of Purposes: in order to

2.2 Adjectives Followed By Infinitives

2.3 Using Infinitives With too And enough

2.4 Passive And Past Forms of Infinitives And Gerunds

2.5 Using Gerunds or Passive Infinitives Following need

2.6 Using A Possessive To Modify A Gerund

2.7 Using Verbs of Perception

2.8 Using The Simple Form After let And help