Using the Bare Infinitive
Here are the six rules for using a bare infinitive:
(1) after a modal verb
[Subj] + [modal verb] + [bare infinitive]
The most common use of a bare infinitive is after a modal verb like “can,” “could,” “may,” “might,” “shall,” “should,” “will,” “would,” and “must.”
In these examples, the modal verbs are in bold, and the bare infinitives are highlighted:
- The barracuda [can] swim extremely fast.
- You [must] believe in yourself.
- Anne [could] give the presentation on Friday.
(2) after verbs of perception
[Subj] + [verb of perception] + [direct object] + [bare infinitive]
- I [saw] Janet win.
- They [watched] the moon descend every evening.
- We [will hear] you sing on Saturday.
- Jack [felt] the spider crawl over his hand.
- She [heard] the birds sing a beautiful melody
- I [observed] the students solve the complex equation
- She [sensed] the mood shift in the room.
(3) after the verb “help”
[Subj] + “help” + [bare infinitive]
or
[Subj] + “help” + [direct object] + [bare infinitive]
The verb “to help” is often followed by a bare infinitive. Sometimes, there is a direct object involved. In these examples, any direct objects are underlined, and the bare infinitives are highlighted:
- Simon helped catch the rabbit.
- Simon helped me catch the rabbit.
- She helps wash the dishes.
- She helps her mother wash the dishes.
(4) after the verb “make”
[Subj] + “make” + [direct object] + [bare infinitive]
The verb “to make” is often followed by a bare infinitive. With this sentence structure, “make” means “cause” or “force.” There is always a direct object involved. In these examples, any direct objects are underlined, and the bare infinitives are highlighted:
- Their story [made] me cry.
- The police always [make] the burglars apologize.
- She [will make] you pay for your mistakes.
(5) after the verb “let”
[Subj] + “let” + [direct object] + [bare infinitive]
The verb “to let” is often followed by a bare infinitive. With this sentence structure, “let” means “allow.” There is always a direct object involved. In these examples, any direct objects are underlined, and the bare infinitives are highlighted:
- They [let] Anne ride the ostrich.
- The judge [lets] the suspect speak.
- Tony [will let] you take a holiday.
(6) after “had better” and “would rather”
[Subj] +
“had better”
or
“would rather”
+ [bare infinitive]
Expressions like “had better” and “would rather,” which are used for a recommendation or preference, are also followed by a bare infinitive.
We had better leave soon.
(“Had better” is similar to “should,” which also takes a bare infinitive.)
She would rather talk to you tomorrow.
(“Would rather” is similar to “prefer,” which takes a full infinitive.)