if clause
|
main
clause
|
Simple Present
|
will-future
|
infinitive
|
|
Modal + infinitive
|
Type II
if clause
|
main clause
|
Simple
Past
|
would +
infinitive
|
could +
infinitive
|
|
might +
infinitive
|
Type III
if clause
|
main clause
|
Past
Perfect
|
would +
have + past participle
|
could +
have + past participle
|
|
might +
have + past participle
|
