The easy way to ielts writing academic Module

For example
If students study hard, they get great results.
(
Zero conditional
is formed by 
“If+ present simple, + present simple.”
This structure is useful in describing
routines/facts/real
and 
possible situations
.)
Unless the government acts now, the economy will suffer an irreversible crisis.
(
First
conditional
is formed by 
“If+ present simple, + future.”
This structure describes 
real
and 
possible situations.
)
Provided (that) farming methods were automated , food production would be faster.
(
Second conditional
is formed by 
“If+ past simple, + would+ base form of the verb.”
This typical complex
structure describes 
hypothetical, unreal,
but 
possible situations.
)

---

If he had studied science instead of math, he would have been a doctor now.
(
Third conditional
is formed by 
“If+ past perfect, + would+ have/has+ pp”
. This conditional type is useful in
describing situations that are 
unreal
or 
impossible to change
as they happened in the past, such as 
regrets
.)
Modal verbs
Modals are functional grammar tools, which make it easier to express probability, ability, obligation, or necessity.
Some common modal verbs are 
can
, 
could
, 
should
, 
may
, 
might
, 
must
. Note that after all modals, 
infinitives
without “to”
should be used.
For example
He 
can
paint well. (
ability/skills/present tense
)
She 
could
achieve a higher goal. (
probability/ability/past tense
)
You 
should
try windsurfing. (
suggestion/present-future
)
You 
should
see a doctor if you are sick. (
advice/necessity/present tense
)
I 
might/may
go shopping tomorrow. (
possibility/future
)
They 
must
wear uniforms. (
obligation/rule/present tense
)