Khan Academy: Modal Verbs

There's a class of helper verbs known as modals that we use to express a bunch of conditions: we can use them to give advice, make guesses at how necessary or likely something is, make requests of people, and so on. They're super useful.

Agreement is the art of making sure that sentence parts agree with one another; you want to make sure that your subjects and verbs match up.

Choose the simple aspect of the verb!

We've established that verbs can show actions and link ideas together. Now, let's talk about how some verbs can be used to help other verbs.

If a verb action is completed in the past, it's in the 'perfect aspect'. Test your knowledge!

Learn to identify the verb!

Choose the appropriate form of the verb, considering when the sentence takes place.

In a previous video, we established that one thing verbs can do is show actions, like 'the bear runs.' Verbs can also link ideas to one another, like 'the bear looks cheerful.'

This article focuses on subject-verb agreement with an explanation, tips to help to determine the correct subject-verb agreement, and a practice exercise with explanation.

David works through a subject-verb agreement question from the Praxis Core Writing test. [4:45]