00:00Auxiliary verbs, often referred to as helping verbs.
00:07There are two types of auxiliary verbs, primary and modal.
00:13Let's start with primary auxiliary verbs.
00:16There are three, be, do, and have, and we have their different forms.
00:27Be is used to form the continuous tense.
00:31For example, she is walking home.
00:35The auxiliary verb is, is helping the main verb walking.
00:40Or, it was raining heavily last night.
00:44The auxiliary verb was, is helping the main verb raining.
00:52Be is also used to form passive voice.
00:56For example, her bike was stolen.
01:00The bird was taken to the vet.
01:04Each auxiliary verb is helping the main verb.
01:10Do, can be used to express emphasis.
01:14For example, I do want dinner.
01:17She does like dancing.
01:21The use of do in each example adds emphasis to the main verb.
01:30Do is also used to form questions.
01:34Does Natalie study Italian?
01:37Do you know the time?
01:40Notice in each sentence, the auxiliary verb, do, is working with the main verb, helping it.
01:49Do also expresses negative statements.
01:53Natalie does not study Italian.
01:57I do not know the time.
02:03How, our final primary auxiliary verb, is used to form perfect tenses.
02:10For example,
02:12We have been to India.
02:15He had left home already.
02:24Now it's your turn to work with the three primary auxiliary verbs.
02:29Use be, do, or have, and their different forms, to complete the following sentences.
02:37Pause here while you work.
02:41Let's check the answers.
02:43Number one.
02:45Has.
02:46She has seen this movie before.
02:49Has is used to help the verb seen to form present perfect.
02:55Number two.
02:56The auxiliary verb do helps agree to express a negative statement.
03:02I do not agree with you.
03:06Number two.
03:07They are coming with us.
03:10The auxiliary, are, works with the main verb, coming, to form present continuous.
03:18Four.
03:19The criminal was caught yesterday.
03:22Was, is used to form passive voice, with the main verb, caught.
03:28Number five.
03:30I do enjoy a good conversation.
03:32The auxiliary verb do, is used to add emphasis to the verb enjoy.
03:42Now let's move on to the modal auxiliary verbs.
03:46Unlike the primary auxiliary verbs, modal verbs don't change form.
03:52Modal auxiliary verbs help the main verb by expressing likelihood, ability, permission, intention, requests, or necessity.
04:12Here are some examples.
04:15It might rain over the weekend.
04:18She can run faster than me.
04:21You may swim in the pool.
04:24I shall leave the party early.
04:28Would you look after my dog?
04:31He must remember their anniversary.
04:36Complete the following sentences, using the most appropriate of the given modal auxiliary verbs.
04:43Pause here while you work.
04:47Let's check the answers.
04:50Number one.
04:51We should study for our final exam.
04:55Should, is expressing necessity.
04:59Number two.
05:00They might give us a discount if we ask.
05:04The auxiliary might, expresses likelihood.
05:09Number three.
05:10I have lots of money, so I can afford it.
05:14Can, expresses ability.
05:18Number four.
05:19May I have a drink, please?
05:23The modal verb may, forms a polite request.
05:27Number five.
05:29The class will bring food tomorrow for the party.
05:33Will, shows intention.
05:37Have a go at writing a few sentences.
05:41Some with primary auxiliary verbs, and some with modal auxiliary verbs.
05:46If you like, share a couple of your sentences in the comments.
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