VERB TENSES

A. Simple Tenses

1.) Present Tense - describes what is happening, what is true at the
                              moment, and what is consistently true

a.) describing what is happening now, in the present

b.) describing a habitual or regularly occurring action

c.) expressing a general truth or widely help opinion

d.) describing a fixed- time future event

e.) discussing "timeless" events and activities

2.) Past Tense - tells of an action completed or a condition created

3.) Future Tense - indicates action yet to be taken or a condition not
                             yet experienced

B.) Perfect Tenses

-uses the past participle together with auxiliary verbs

-generally describes actions or occurences that have 

                           already been completed or that will be completed before

                           a more recent point in time

1.) Present Perfect Tense - allows that action begun and completed in

                    the past also continues-or its effects continue into the 

                    present

have + past participle

2.) Past Perfect Tense - indicates that an action was completed before 

                   another one took place. When two actions both started and 

                   stopped in the past, the earlier action uses had as a helper.

had + past participle

3.) Future Perfect Tense - indicates that an action will be complete 

                  before some specified or predictable time

will have/shall have + past participle