There is only one verb in many sentences, such as the first one in this article. It’s the main verb and describes the action in a sentence.
But other times, there are two verbs! For example, the second sentence in this article has two: are and explaining.
In this case, “explaining” (from “to explain”) is the main verb – that describes what’s happening. But “are” (from “to be”) is a helping verb. In this case, it makes the tense of the sentence present progressive.
Helping verbs can do many things in a sentence: they can change the verb tense, form questions, create passive voice, and more!
There are several different verbs that we can use as helping verbs. And they fall into 2 different categories.
Three main verbs are used as helping verbs in English. Depending on the verb and how you use it, you can change the tense, voice, or mood of the main verb in your sentence.
The other type of helping verb is a modal verb or a modal auxiliary verb. These are very common in English, and they modify the meaning of the main verb.
In particular, they help us discuss future possibilities, permission, or things we need.
Also, modal verbs only have one form – you never conjugate them! However, you can make them negative.
We can use helping verbs to ask questions and make sentences negative.
Some questions use question words in English, such as why, how, or when. But, for yes / no questions, use helping verbs!
For yes/no questions, use the helping verb "to do." And you can use this to make either a positive or negative question.
In this question, "do" is the helping verb, and "like" is the main verb. "Do" is the word that turns a regular sentence into a question.
Regular sentences are in the indicative mood. However, questions are in an interrogative mood. So, helping verbs allow us to change the mood of a sentence.
Helping verbs also allow us to make sentences negative.
The first sentence is wrong because we can't just put "no" in front of the main verb to make it negative. We have to use the helping verb "to do"!
You can also negative past tense sentences with the verb "to do."
Finally, you can use the helping verb "to do" to negate commands (imperative voice.)
To talk about the future in English, you must use a helping verb! In this case, it's the modal verb "will."
Here is an example of the future tense of the verb "to go."
You can make these constructions negative too. All you have to do is add "not," either by itself or as part of a contraction.
You can make other tenses with helping verbs, too! For instance, all of the perfect tenses use the helping verb "to have." (Because the future tense requires the modal verb "will," the future perfect uses both "will" and "to have.”)
The perfect tenses help us talk about actions that are already completed. And there are present, past, and future perfect tenses.
Present perfect examples
Past perfect examples
Future perfect examples
We use progressive tenses to talk about ongoing or continuous actions. We can also use them in the present, past, or future.
Like the perfect tenses, the progressive tenses use a helping verb – but they use the verb "to be" instead.
Present progressive examples
Past progressive examples
Future progressive examples
The perfect progressive tense is a little tricky because it combines the perfect and progressive tenses. We use it to talk about a continuous action that ends.
And because it's a combination of two tenses, we use the helping verbs from both of them. First, there's "to have," and then the past participle of "to be-," been.
It's not a very common tense, but it's still good to know what it means and how to use it.
Present perfect progressive examples
Past perfect progressive examples
Future perfect progressive examples
Rather than changing the tense or mood of a sentence, we can use a helping verb to change the voice of the sentence.
If we want to change a sentence from active voice to passive voice, we add the helping verb "to be."
This makes the subject of the sentence receive the action. (In an active sentence, the subject does the action.)
If we want to stress an idea or opinion, we can use a helping verb for emphasis. In this case, we use the helping verb "to do."
This is much more common in spoken English than in written English.
If you have two identical main verbs in a single sentence, you can sometimes replace the second one with the helping verb "to do."
Also, you can do this with modal verbs such as "will" or "can." Essentially, you are avoiding repetition by leaving off part of the verb.
Helping verbs help us a lot!
Only a few verbs work as helping verbs, but they can do many things. For instance, they can change a sentence from positive to negative, active to passive, indicative to interrogative, or go between tenses. So, keep practicing your auxiliary verbs – they'll help you a lot!
Also, check out the other pages on this site for more great grammar tips!