The document discusses the different forms that a to-infinitive can take, including progressive, perfect, and passive forms. The progressive form emphasizes something that is in progress, the perfect form refers to something that has happened in the past but is still relevant, and the passive form is used when the doer of the action is unknown or less important than the action itself. Examples are provided to illustrate the use of each form.

1. Section A

2. A to- infinitive can also have a progressive,
perfect, or passive form. We use the progressive
form of a to- infinitive to emphasize something
is in progress at a particular time.
She seems to be doing very well.
PROGRESSIVE FORM= to be + present participle
(= I think that she is doing very well.)

3. We use the progressive form of a to- infinitive
to emphasize something is in progress at a
particular time.
To be living in Italy is a dream come true.
PROGRESSIVE FORM= to be + present participle
(= The fact that I am living in Italy is a dream come true.)

4. We can use the perfect form of a to- infinitive
for something that has happened in the past but
has a connection to now.
Jeff looks much better. The treatment seems
to have been effective.
PERFECT FORM= to have + past participle
(= I think the treatment has been effective.)

5. We can also use the perfect form of a
to- infinitive to show that one event in the
past took place before another.
They were delighted to have
finally met her.
PERFECT FORM= to have + past participle
(= They were delighted because
they had finally met her.)

6. We use the passive form of a to- infinitive when
the doer of the action is unknown or less
important than the action itself.
What needs to be done?
PASSIVE FORM= to be + past participle
(= What does somebody need to do?)

7. We use the passive form of a to- infinitive when
the doer of the action is unknown or less
important than the action itself.
He didn’t want to be called Professor.
PASSIVE FORM= to be + past participle
(= He didn’t want people to call him Professor.)