verb + to infinitive

want to do something:

promise to keep

offer to show

try to convince

want to sell

agree to buy

refuse to let

decide to be

verb + object + to infinitive

want somebody to do something:

learn (how) to put on

advise us to do

tell us to buy

ask us to wear

verb + object + infinitive

let somebody to do something:

help us lose

make us look

let us express

verb + -ing

like doing something:

enjoy reading

like buying

stop biting

suggest having

give up eating

avoid smoking

start doing

love going