lunes, 18 de marzo de 2013
ZERO CONDITIONAL
Certainty
The Zero conditional
is used for things that are always true as long as the condition is met.
If condition results
Present simple present
simple
If you heat the water to 100 degrees
clesius, it boils.
If I drink
coffee, I get headache
“if” suggest something
unreal, nonexistent, contrary to fact, or future, the verb in an “IF” clause,
is never the same form as that in the result clause of the same sentences.
SEQUENCE
OF TENSES
|
||
IF
|
RESULT
|
|
Present
|
Future or Present
|
|
Past
|
Conditional
|
|
Past Perfect
|
Perfect Conditional
|
IF can be
used at the beginning or between the two clauses, in the negative or
interrogative forms.
CONDITIONAL 1
PRESENT
FUTURE OR PRESENT
If I find
my partner
I will talk to him
I will talk
to him
if I find him
If you
don´t come here I won´t be able to study
I won´t be
able to study
if you don´t come
The “IF” may be at the end of the sentences or at the beginning
If we don´t
use the password
we don´t access to the
internet
We don´t
access to the internet
if we don´t use the
password
CONDITIONAL 2
The present conditions
are started in the past. The result clause includes one of the Modal Auxiliaries.
WOULD-COULD-MIGHT(the
negative of these modals auxiliary are: would not- Wouldn’t; Could not-
Couldn´t, Might not –Mightn´t)
PAST
CONDITIONAL
If the teacher were not here, the students would leave
their classroom.
If I were rich, I could travel around the world
If I had
a multimedia computer, I might
access to the internet
If you didn´t
create your web page, many people would
not know you
Note the use of them
form “were” instead of “was” “were” is used both singular and plural.
If I were
I computing expert, I would have my
own web page
If he weren´t
a good teacher, his classes would be
bored.
If the internet service were expensive, I couldn´t
get it
CONDITIONAL 3
“Imaginary Past”
The third conditional is used when we are
talking about the past and imagining something different from what actually
happened:
Condition
Result What actually
happened
Past
Perfect WOULD HAVE + Past Participle
If I had known, I would have helped. I
didn't know and didn't help.
EXAMPLES
If she
had headache, I would have a
pill
If I had
paid, I would have had more credit
If we
had got good degrees, we would have
studied better
CONDITIONALS TIME AND PROBABILITY TABLE
PROBABILITY
|
CONDITIONALS
|
EXAMPLE
|
TIME
|
Certain
|
Zero conditional
|
If you heat water to
100 degrees Celsius, it boils
|
Any time
|
Likely
|
First conditional
|
If it rains, I will
stay in
|
future
|
UnLikely
|
Second conditional
|
If I wont the
lottery, I would retire
|
future
|
Impossible
|
Second conditional
|
If I had the money,
I would lend it to you
|
present
|
Impossible
|
Third conditional
|
If I had seen
him, I would have given him the
message.
|
past
|
