GRAMMAR: THE PERFECT INFINITIVE

Practise what you have read. Use the simple infinitive (study/work...) or the perfect infinitive (have studied/have worked...) of the verb in brackets.

KEY TO THE ACTIVITY BELOW HERE

He must ___________ (study) a lot because he always passes all his exams with brilliant marks.

He must ______________ (study) a lot when he was at school, because his marks were brilliant!

He should _____________(stop) smoking or he is going to end up in hospital.

He should ______________(stop) smoking years ago!

If I had studied more last year, I would ____________(pass) the exam.

If I studied more, I would____________ my next exam.

It is said that he earns a fortune in that company=  He is said  TO __________(earn) a fortune in that company.

It is believed that he worked for IBM twenty years ago= He is believed TO_____________ (work) for IBM twenty years ago.