Unit 19. I have done(present perfect) and I did(past)

BASIC GRAMMAR IN USE 

 

Unit 19. I have done(present perfect) and I did(past)

 

Kate is making some coffee.

(after)

Kate has made some coffee.

"I've made some coffee. Would you like some?"

 

Kate has made some coffee = she made some coffee and the coffee is ready now.

 

* You can use the present perfect for new information.

"I've decide to quit my job."   "Really? Why?"

We've sold oru car. Now we take the bus every day.

They're having a party next week, but they haven't invited me.

 

* You can also use the past in these examples:

I decided to quit my job.

 

* We say that someting has changed. It is different now from what it was before:

Her English has improved. It's pretty good now.

The city has changed a lot. It's very different now.

 

* We use the past, not the present perfect, with a finished time(last year, yesterday, etc.)

They arrived yesterday.(not have arrived)

Where were you on Sunday?(not Where have you been)

"Did you go out last night?"   "No, I stayed home."

William Shakespeare lived from 1564 to 1616. He was a writer. He wrote many plays and poems.

 

* We use the past to ask When...? or What time...?

When did you sell your car?(not When have you sold)

What time did Andy go out?

 

* We use the present perfect with yet in negative sentences and questions.

Yet(=until now) is usually at the end:

"Does James know that you're going away?"   "No, I haven't told him yet."

 

* You can also use the past with yet:

Did Nicole start her new job yet?