VERB PATTERNS: INFINITIVE AND -ING FORMS
1. Some verbs are followed by "to + infinitive"
She would like to buy a new dress
I want to buy a new house
2. Other verbs are followed by "-ing"
He enjoys going to discos
They finished doing the exam
3. There are also verbs that can be followed by both "to+infinitive" and "-ing" with no change of meaning.
It began to snow/snowing
He continued to teach/teaching,
4. Don´t forget that after a preposition the verb always takes "-ing".
He is looking forward to seeing you again.
We´re thinking of studying French next year.