present perfect/simple past/present perfect progressive

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Present Perfect/Simple Past/Present Perfect Progressive

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Page 1: Present Perfect/Simple Past/Present Perfect Progressive

Present Perfect/Simple Past/Present Perfect

Progressive

Page 2: Present Perfect/Simple Past/Present Perfect Progressive

How do we form Present perfect?

POSITIVE (+): Have/has + V3

NEGATIVE (-): Haven’t/hasn’t + V3

QUESTION (?): Have/has+S+V3

Page 3: Present Perfect/Simple Past/Present Perfect Progressive

When do we use present perfect?

a. situations that began in the past and continue up to now (for, since)-I have been a teacher since 2008.b. events that have /haven’t happened up to now (ever, never, yet, still, already)-Have you ever been to Syria?c. An event that has occurred more than once in the past (so far)-We have had 3 tests so far.

Page 4: Present Perfect/Simple Past/Present Perfect Progressive

What is the difference between present perfect and simple past?

PRESENT PERFECT:-past events with no specific mention of time.*I have watched this film before. -situations that started in the past and are continuing. *I have been a teacher

for 3 years.SIMPLE PAST:-past events when time is mentioned*I watched this film in 2000. -situations that began and ended in the past.*I was a student 3 years ago.

Page 5: Present Perfect/Simple Past/Present Perfect Progressive

How do we form Present Perfect Progressive?

POSITIVE (+): Have/has + been + Ving

NEGATIVE (-): Haven’t/hasn’t + been + Ving

QUESTION (?): Have/has + S + been + Ving

Page 6: Present Perfect/Simple Past/Present Perfect Progressive

When do we use Present Perfect Progressive?

-For an activity that is happening at the moment-To tell how long this activity has been in progress.

*Right now, I am sitting at my desk.*I have been sitting at my desk since seven o’clock. I have been sitting here for two hours.

Page 7: Present Perfect/Simple Past/Present Perfect Progressive

What is the difference between Present Perfect and Present

Perfect Progressive?If you say: “I have been writing for 5 hours.”The important thing in the sentence is the time.

If you say: “I have written thirty pages.”The important thing in the sentence is number of pages.

Page 8: Present Perfect/Simple Past/Present Perfect Progressive

When can’t you use Present Perfect Progressive?

With non-progressives.

You can say:* I have known Alex for 20 years.

You can’t say:*I have been knowing Alex for 20 years.

Page 9: Present Perfect/Simple Past/Present Perfect Progressive

What are the time expressions ?

since, for, all day/morning