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She seems to be very optimistic.
She seems to have been very optimistic.
In which case "she was optimistic", but isn't anymore.
She seems to have been very optimistic.
A perfect infinitive is an infinitive in the form of “to have + past participle”. It is mainly used after some verbs to emphasize that something happened in the past.
They are believed to have left the country.
Find the passives in this sentence.
reporting
The sweets made by Lily are divine.
Where is passive?
made
Mia is considered to have been the best manager of the company.
Mia is considered to be the best manager of the company.
Is there a difference in meaning between the two sentences?
In the first sentence, Mia is not the best manager anymore.
Find the passives in this sentence.
The chairman is thought by the press to earn too much.
reporting
The painting sold at the auction has been stolen from the museum.
Find the passive.
sold, has been stolen
These doors should be shut at night.
These doors should shut at night.
Which one is correct?
These doors should be shut at night.
It is said that they are in Las Vegas.
They are said to be in Las Vegas.
Which one is correct? Is there a difference?
Both, no difference.
Being invited to the party, I decided to buy a present.
What happened first?
You were invited to the party.
This sonnet must have been written by Shakespeare.
This sonnet must be written by Shakespeare.
Which one is correct? Why?
This sonnet must have been written by Shakespeare. - finished action, past
She was thought to have left the previous week.
What happened earlier? People thought or she left?
she left before people thought about it
After being praised they seem to have extra power to study.
Find the passive.
After being praised.
I love be given flowers.
Correct the mistake.
I love being given flowers.
The movie shot in Italy struck the audience with its breathtaking landscapes.
Where is passive?
(which was) shot
If broken, we won't take it back.
Find the passive.
If broken