Grammar: Word classes: Verbs: Verb formation

Modal auxiliary verbs (can, could)

What are modal auxiliary verbs?

Modal auxiliary verbs are also 'helping verbs':

Here is a list of modal auxiliary verbs:

Modal auxiliary verbs are different from the main auxiliary verbs (be, do, have) in terms of their form, and because of the meanings they convey.

Modal verbs are used to indicate likelihood, obligation and willingness. Some modal verbs are used when we want to be polite. The modal verb will is used to form the future tense.

The form of modal verbs does not change and they are followed by the bare infinitive:

MegaMonster couldn’t           sleep.
                   modal verb           bare infinitive

When dealing with language in the classroom, it is useful to be able to identify the different forms of modal verbs, including negative forms.

For some practice identifying the different forms of modal verbs, click here:

For more about some of the problems students have with modal verbs, click here:

For more information, see:

	Grammar: Groups & phrases: Verb group: Adjusting interactions: modality: Overview
	Grammar: Groups & phrases: Verb group: Time & tense: Future

For PrimeTeach teaching activities which provide KS2 students with practice in using modals of ability/permission, see:

The three bridges
Farmer Lee, can we cross the river?

Tell me more ... Tenses with modal verbs Talking about likely and unlikely situations Semi-modal verbs