Difference between bare infinitive and modal auxiliary verb ?

The bare infinitive is the base form of a verb without the "to" particle, such as "go," "eat," "sleep." It is used after certain verbs like "let," "make," "help," and after modal auxiliary verbs like "can," "will," "should."

Modal auxiliary verbs are a type of auxiliary verb that express necessity, possibility, ability, or permission. They include words like "can," "could," "will," "would," "shall," "should," "may," "might," "must." Modal auxiliary verbs are always followed by the base form of a verb (bare infinitive) and cannot be used on their own as the main verb in a sentence.

Bare Infinitive

- A bare infinitive is the base form of the verb without the "to" infinitive marker.
- It is used after certain verbs (e.g., want, need, make) and adjectives (e.g., easy, difficult).
- It expresses a purpose or result.

Examples:

- I want to go to the park.
- It is easy to learn English.

Modal Auxiliary Verb

- A modal auxiliary verb is a special type of verb that expresses possibility, necessity, or permission.
- It is used with a bare infinitive to form a modal construction.
- It changes the mood or tone of the sentence.

Examples:

- You should study for the test. (possibility)
- You must complete the assignment by Friday. (necessity)
- You may borrow my car. (permission)

Key Differences

| Feature | Bare Infinitive | Modal Auxiliary Verb |
|---|---|---|
| Form | Base form of the verb | Special type of verb + bare infinitive |
| Function | Expresses purpose or result | Expresses possibility, necessity, or permission |
| Example | I want to go to the park. | You must complete the assignment by Friday. |