Advanced Unit 3
Advanced · Grammar Reference
Unit 3 — Verb Patterns
infinitive · gerund · verb + that clause · no change of meaning
3.1  Verb patterns with the infinitive
Verb + infinitive

The pattern of verb + infinitive is used:

📌 Note
Some verbs can take both patterns: ask · beg · want · help
The passive of make takes to: I was made to do it. The passive of let is be allowed to.
Verb + infinitive without to
helpletmake
They made me do it.   We let her stay.
Adjective + infinitive

The infinitive form is used after adjectives.

Are you happy to see me?   You'll be disappointed to hear my news.
3.2  Verb patterns with the gerund

The gerund or -ing form is used:

📌 Note
The preposition to (not as part of the infinitive) can cause problems. This is because to + -ing seems a strange combination: I'm looking forward to seeing you. I'm not used to driving on the left.
3.3  Verb + that + clause

In some (not all) of the above examples, a that clause can be used after the main verb in place of a gerund or infinitive. There is no change in meaning. That itself can be omitted.

She admitted (that) she had made a mistake.He promised (that) he would do it.
📌 Note
Suggest has special problems. These constructions are also possible: They suggested (that) we have a long break. They suggested (that) we had a long break.
*He wanted that I do it is a common mistake.
3.4  Verb + infinitive or gerund with little or no change of meaning

The verbs begin, continue, and start can take either the infinitive or gerund and mean the same.

begancontinuedstartedto rain / raining
Itbegancontinuedstartedto rain / raining

Many verbs that express feelings and attitudes (like, love, prefer, can't stand, etc.) can be followed by either the infinitive or gerund, and the distinction in meaning is small.

I like travelling by train. (general truth)I like to travel by train when I go to my grandmother's. (a little more particular)
📌 Note
Like + gerund can mean enjoy. Like + infinitive can express what you think is the right thing to do.
The infinitive is always used with would like/prefer, etc.: I'd like to travel by train when I next visit her. (one particular occasion)