Saturday, September 24, 2011

FUTURE PERFECT:

Future Perfect
Future Perfect has twod
different forms: "will have
done" and "be going to have
done. " Unlike Simple Future
forms, Future Perfect forms
are usually interchangeable.
FORM Future Perfect with
"Will "
[will have + past participle]
Examples:
You will have perfected
your English by the time
you come back from the
U.S .
Will you have perfected
your English by the time
you come back from the
U.S .?
You will not have
perfected your English by
the time you come back
from the U.S.
FORM Future Perfect with
"Be Going To"
[am /is /are + going to have +
past participle]
Examples:
You are going to have
perfected your English by
the time you come back
from the U.S.
Are you going to have
perfected your English by
the time you come back
from the U.S.?
You are not going to
have perfected your
English by the time you
come back from the U.S .
NOTE: It is possible to use
either "will" or "be going to"
to create the Future Perfect
with little or no difference in
meaning.
Complete List of Future
Perfect Forms
USE 1 Completed Action
Before Something in the
Future
The Future Perfect expresses
the idea that something will
occur before another action in
the future. It can also show
that something will happen
before a specific time in the
future.
Examples:
By next November , I will
have received my
promotion.
By the time he gets home,
she is going to have
cleaned the entire house .
I am not going to have
finished this test by 3
o' clock.
Will she have learned
enough Chinese to
communicate before she
moves to Beijing?
Sam is probably going to
have completed the
proposal by the time he
leaves this afternoon.
By the time I finish this
course, I will have taken
ten tests.
How many countries are
you going to have visited
by the time you turn 50?
Notice in the examples above
that the reference points
( marked in italics) are in
Simple Present rather than
Simple Future . This is because
the interruptions are in time
clauses , and you cannot use
future tenses in time clauses.
USE 2 Duration Before
Something in the Future
(Non -Continuous Verbs)
With Non-Continuous Verbs
and some non-continuous
uses of Mixed Verbs, we use
the Future Perfect to show
that something will continue
up until another action in the
future.
Examples:
I will have been in
London for six months by
the time I leave.
By Monday, Susan is
going to have had my
book for a week.
Although the above use of
Future Perfect is normally
limited to Non-Continuous
Verbs and non-continuous
uses of Mixed Verbs, the
words "live," "work," "teach,"
and "study" are sometimes
used in this way even though
they are NOT Non-Continuous
Verbs.
REMEMBER No Future in
Time Clauses
Like all future forms, the
Future Perfect cannot be used
in clauses beginning with time
expressions such as: when,
while, before, after, by the
time, as soon as, if, unless,
etc. Instead of Future Perfect,
Present Perfect is used.
Examples:
I am going to see a movie
when I will have finished
my homework. Not
Correct
I am going to see a movie
when I have finished my
homework. Correct
ADVERB PLACEMENT
The examples below show
the placement for grammar
adverbs such as: always, only,
never, ever, still, just, etc.
Examples:
You will only have learned
a few words.
Will you only have learned
a few words?
You are only going to have
learned a few words.
Are you only going to have
learned a few words?
ACTIVE / PASSIVE
Examples:
They will have completed
the project before the
deadline. Active
The project will have
been completed before
the deadline. Passive
They are going to have
completed the project
before the deadline.
Active
The project is going to
have been completed
before the deadline.
Passive
More About Active / Passive
Forms
EXERCISES AND RELATED
TOPICS
Verb Tense Exercise 25
Future Perfect and Future
Perfect Continuous
Verb Tense Exercise 26
Fut
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