In questo episodio, si spiega la grammatica-inglese ed il verbo do/does.

The transcript:
Hello, this is Robert at English 360. And today's podcast is about DO and DOES in English grammar.
I'm going to be speaking slower so everybody can understand this, especially because this podcast is for beginner-level students.
So let's start with DO and DOES and how we use these verbs as auxiliaries.
So in the English language, we have present simple.
For example,
I live in the UK.
She works as a shop assistant.
If you want to make these sentences negative, you must use an auxiliary verb DO.
So the negatives of:
I live in the UK
is
I DON’T live in the UK.
The negative of:
She works as a shop assistant
is
She DOESN’T work as a shop assistant.

So when do we use DO and when do we use DOES?
For example:
We use DO with first person I, with first person plural WE with second person YOU and with third person plural THEY.
So we can say:
I DON’T work as a shop assistant
We DON’T live in the UK.
They DON’T like eating fish.
But if it's the third person singular we must use DOESN’T that’s DOES NOT.
So you can say
She lives in the UK
Or
She DOES NOT live in the UK
He studies French
Or
He DOES NOT study French.
There are two things to remember. One DOES NOT is the same as DOESN’T. You can say
He DOES NOT study French
Or
He DOES NOT study French.
It's exactly the same thing.
Next thing to remember is when you use DOES in the third person singular, the normal verb loses its third form.
For example, let's look at this example.
He likes French.
LIKES is the third person.
He likes French.
But the negative is he DOESN’T like French.
Not LIKES, LIKE. This is because we are using DOES so we don't use the third form of the regular verb.
DO and DOES can also be used in questions. For example, you can say
DO you like French?
DO they live in the UK?
DOES she play tennis?
DOES it matter?
So, when we use the question form, we use DO or DOES before the subject.
DO you like..?
DOES he study?
DO they work?
Right. The last thing is the pronunciation. When you write English, it's very slow and very easy. When you speak English, you need to speak different, a little bit more fluent.
For example, you can say, I don't like fish, you can say it faster.
For example, you can say the sentence, I don't like fish fast. I don't like fish, I don't like fish.
You are stressing DON’T.
I don't like fish.
In the third person it becomes she DOESN’T like fish. She DOESN’T like fish. We do not pronounce the T in DOESN’T.

We don't say she DOESN’T like fish, but we say she DOESN’T like fish.
He DOESN’T work in a Japan so we don't pronounce the T.
In the question you normally link to DO or to DOES with the subject. You can say
Do you like fish?
Do you work in a bank?
So for example, the sentence
Do you work in a bank
becomes
D’you work in a bank?
Does she like French?
becomes
Does she like French?
Does he play tennis?
becomes
Does he play tennis?
Do they live in the UK?
becomes
Do they live in the UK? Do they live in the UK?
Right. So it's important to practice and pronounce the sentences altogether. Practice with me.
Do you like French?
Do you?
Do you like French?
Does she play tennis?
Does he work in a bank?
Does it matter?
Do we know the answer?
Do they live in the UK?
Right. I hope you like this podcast. You will find the text in the description. Have a great day and please follow me on Spotify or whatever channel you are on. Let me know in the comments section if you need anything...