This is a song like example of the Present Perfect simple.

PAST SIMPLE

PRESENT PERFECT + EVER, NEVER, ALREADY, YET

EVER

Los adverbios "ever" y "never" se refieren a un tiempo no identificado, anterior al presente (Have you ever visited Berlin?). "Ever" y "never" siempre se colocan antes del verbo principal (en "past participle"). "Ever" se utiliza:

EN PREGUNTAS

EJEMPLOS

Have you ever been to England?
Has she ever met the Prime Minister?

EN PREGUNTAS NEGATIVAS

EJEMPLOS

Haven't they ever been to Europe?
Haven't you ever eaten Chinese food?

EN ORACIONES NEGATIVAS CON "NOTHING+EVER" O "NOBODY+EVER"

EJEMPLOS

Nobody has ever said that to me before.
Nothing like this has ever happened to us.

CON "THE FIRST TIME"

EJEMPLOS

It's the first time that I've ever eaten snails.
This is the first time I've ever been to England.

NEVER

"Never" significa nunca antes de ahora y equivale a "not (...) ever": (I have never visited Berlin)

¡CUIDADO!: "Never" y "not" no deben usarse juntos.

I haven't never been to Italy.
I have never been to Italy.

ALREADY

"Already" se refiere a una acción que ha ocurrido en un tiempo anterior al presente pero no especificado. Sugiere que no es necesario repetir la acción.

EJEMPLOS

I've already drunk three coffees this morning. (= ¡y me estás ofreciendo otro!)
Don't write to John, I've already done it.

También se utiliza para preguntar:

Have you already written to John?
Has she finished her homework already?

"Already" puede colocarse antes del verbo principal (en "past participle") o al final de la frase:

I have already been to Tokyo.
I have been to Tokyo already.

YET

"Yet" se utiliza en oraciones negativas e interrogativas, con el significado de (no) en el periodo temporal entre el pasado y el ahora, (no) hasta el momento presente, incluido éste. Suele colocarse al final de la frase.

EJEMPLOS

Have you met Judy yet?
I haven't visited the Tate Gallery yet
Has he arrived yet?
They haven't eaten yet

Explicacion de la utilizacion del USED TO

Sound track  used to

Examples + audio------- used to

Aquí puedes escuchar una explicación de como usar la expresión “used to” para hablar del pasado, un poco sobre la diferencia entre “used to” y el pasado simple:   http://aprendemasingles.com/2014/02/24/listening-20-ejemplos-used-to-hablar-pasado/

Afirmaciones

When she was young, she used to have long hair, but now she has short hair.

There used to be a cinema here, but now there’s a restaurant.

He used to be a teacher, but now he’s retired.

Anna used to travel a lot, but now she prefers staying home.

They used to go out a lot at weekends, but now that they have children they usually stay in.

I used to see Peter every day, but now I only see him once a year.

I used to live in a house, but now I live in a flat.

I used to read more books, but now I usually watch films.

He used to do sport, but now he just watches sport on TV.

They used to be young, but now they’re old.

Negaciones

He didn’t use to like football, but now he loves it.

He didn’t use to ride a motorbike until he bought one last year.

They didn’t use to like each other, but now they’re married.

My boss didn’t use to be so irritating, but now I can’t stand him.

Paul didn’t use to have flatmates, but now he has two.

Preguntas

Did you use to live in London?

Did she use to work with Sandra?

Did you use to eat hamburgers every day?

What did you use to do at Christmas when you were a child?

Did Peter use to have a car

Materials, textures , that can be described the characteristics of the clothing

http://www.forever21.com.mx/

Used to

We use 'used to' for something that happened regularly in the past but no longer happens.

• I used to smoke a packet a day but I stopped two years ago.
• Ben used to travel a lot in his job but now, since his promotion, he doesn't.
• I used to drive to work but now I take the bus.

We also use it for something that was true but  no longer is.

• There used to be a cinema in the town but now there isn't.
• She used to have really long hair but she's had it all cut off.
• I didn't use to like him but now I do.

'Used to do' is different from 'to be used to doing' and 'to get used to doing'

to be used to doing

We use 'to be used to doing' to say that something is normal, not unusual.

• I'm used to living on my own. I've done it for quite a long time.
• Hans has lived in England for over a year so he is used to driving on the left now.
• They've always lived in hot countries so they aren't used to the cold weather here.

to get used to doing

We use 'to get used to doing' to talk about the process of something becoming normal for us.

• I didn't understand the accent when I first moved here but I quickly got used to it.
• She has started working nights and is still getting used to sleeping during the day.
• I have always lived in the country but now I'm beginning to get used to living in the city.

Using 'used to' for past habits

• Grammar
 
• Vocabulary

'I used to ski, but now I snowboard.'

'Used to' for past habits

We use 'used to' to talk about past events which we no longer do. We only use it to talk about the past; there is no similar expression for the present.

'I studied French, but I don’t anymore.' → 'I used to study French.'
'In the past I smoked, but I don't now.' → 'I used to smoke.'

Note: after 'used' to we alway use the infinitive. Never use a continuous or past tense verb:

'I used to smoke.'
'I used to smoking.'
'I used to smoked.'

Asking questions using 'use to'

We usually use 'did' when we ask about past habits.

The typical question form is:

'Did you use to watch Mickey Mouse?'
'Did you use to like school?'

Note: 'Use to' is used in the question form not 'used to'.

Answering 'use to' questions

'Use to' questions can be answered in a couple of ways. Take a look at the follwing question and response:

'Did you use to wear a school uniform?'
'Yes, I used to wear a horrible uniform!'
(or in negative sentences)
'I didn't use to wear a uniform'. or 'I used not to...'

Using 'would' instead of 'used to'

We use 'would' when we want to talk about how often a past habit happenened. It can have the same meaning as 'used to'. For example:

'I used to go swimming twice a week.'→ ' I would go swimming twice a week.'
Note: Both of these sentences have the same meaning.

We can use 'would' instead of 'used to' when a time is mentioned:

'When I was young, I used to visit my grandmother every summmer.'→ ' When I was young, Iwould visit my grandmother every summer.'
Note: Both of these sentences have the same meaning.

If the sentence is not about a repeating habit/action, or does not include a time expression, we can not use 'would':

'I used to play piano.'→'I would play piano.'

It is more natural to say:

'I used to play piano. I would practise every day.'