The following adjectives are always followed by the infinitive form of the verb and never by the gerund:
- able (*)
(*) Able means the same as capable in many instances, but the grammar is very different. While able is followed by the infinitive, capable is followed by of + (verb + ing), e.g.:
- These students are not yet able to handle such difficult problems.
- These students are not yet capable of handling such difficult problems.
Examples of adjectives followed by infinitive:
- Mohammad is anxious to see his family.
- It is dangerous to drive in this weather.
- We are ready to leave now.
- It is difficult to pass this test.
- It is uncommon to find such good crops in this section of the country.
- Ritsuko was pleased to be admitted to the college.
Some verbs can be followed by either the infinitive or the gerund, but the meaning changes:
John stopped studying. (John is not going to study anymore)
John stopped to study. (John stopped doing something in order to study).
k e e p s t u d y i n g.