Verbs which change meaning when followed by the gerund or infinitive form.

http://www.bbc.co.uk/learningenglish/english/course/towards-advanced/unit-9/session-1

We use infinitives of purpose to explain why we're doing something.

http://www.bbc.co.uk/learningenglish/english/course/towards-advanced/unit-6/session-1

• verb + to-infinitive
• verb + gerund
• verb + that clause

http://www.bbc.co.uk/learningenglish/english/course/lower-intermediate/unit-10/session-2/activity-3

http://www.bbc.co.uk/learningenglish/english/course/intermediate/unit-29/session-2/activity-3