section 5 Swam the good grammar

 5. section 5 

perfect tenses grammar summary and pre-test

present perfect: forms 

I have paid.

Has she forgotten?

finished actions: present perfect or simple past?

present perfect: news

We've found oil in the garden!

present perfect and simple past:

news and details

up to now (1)

How much? 

How often?

already, yet and just

up to now(2)

I've been here since Tuesday.

up to now (3): 

present perfect progressive

present perfect or

present perfect progressive?

simple past and present perfect: summary

present prefect and simple past:

revision exercises

past perfect

It had already begun when we arrived

test yourself perfect tenses