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All these tenses describe actions in the past. The Present Perfect differs from the Simple Past in:
The Present Prefect
Simple differs from the Present Prefect Progressive in:
You use the
Past Perfect instead of the Simple Past or Present Perfect when an action has
taken place before another action in the past.
found feathers everywhere. The cat
had caught a bird.
Expressing the FUTURE
There is no
one future tense in English.
Instead, several verb forms and auxiliaries might be used to express the
4.1 will + infinitve: (shall after I and we in
prediction without proof and which is based upon your own opinion
I think Labour will win the elections. (That is my opinion.)
2.) in the
First Conditional but never after if
If you arent careful, youll break that glass.
decision or an intention made at the moment of speaking
Someone is knocking at the door.
Ill open it.
4.2 - to be going to + infinitive:
prediction based on a present fact or some evidence
Look at the sky. It s going to
be a lovely day. (The sky proves this.)
decision or an intention made before the moment of speaking
When she grows up, she is going to be a ballet dancer.
4.3 the Present Progressive or Continuous
future arrangement (made an
Im seeing Aïda next month. (You have bought the tickets already.)
4.4 the Present Simple
certain future of a timetable or calendar
My flight leaves at 10.00.
It is my birthday tomorrow.
if, when, before and so on in the First Conditional
If the weather turns bad, the picnic will be cancelled.
4.5 the Future Continuous: will + be + -ing
activity that will be in progress before
and after a time in the future
Dont phone at 8.00, because we will be having dinner.
future event that will happen in he natural course of events
Dont worry about our guests.
Theyll be arriving any minute now.
4.6 the Future Perfect
action that will be completed before a definite time in the future.
Ill have done all my work by this evening.