Rules
What is the structure for affirmative form of perfect modals?
Subject + modal + have + past participle + complement.
My favorite cousin _________________ (should / marry) David before.
My favorite cousin should have married David before.
a child / was / thought / when / I / become / would / doctor / I
When I was a child I thought I would become a doctor
We use must for...
Drawing conclusions or expressing need
What do we use perfect modals for (what is the use of perfect modals)?
To tell regrets.
Mary and her parents ______________ (should / not / go) to the trip with them.
Mary and her parents shouldn't have gone to the trip with them.
believed / my parents / a soccer player / would / I / become
We use might/may for...
Expressing possibility.
What is the structure for perfect modals in question form?
Modal + subject + have + past participle + complement + ?
Lyra and Will _________________ (might / play) with the children at the park.
Lyra and Will might have played with the children at the park.
know / school / would / an actress / I / didn't / finished / when / I / become / I
When I finished school, I didn't know I would become an actress
We use could for...
Expressing ability
What is the structure for perfect modals in negative form?
Subject + modals + negative + have + past participle + complement
Sylvie and Jeanna ____________ (could / not / take) the keys of the car!
Sylvie and Jeanne couldn't have taken the keys of the car!
were / Florio and Lucia / to marry / going / happened / something / but
Florio and Lucia were going to marry but something happened.
We use should for...
Expressing advice, suggestions or recommendations