Understanding Infinitives and Their Uses

The video tutorial explains the difference between normal and perfect infinitives. It begins with an introduction to infinitives, followed by examples of normal infinitives. The structure of perfect infinitives is then detailed, with examples illustrating their use. The tutorial compares normal and perfect infinitives, showing how they are used in different tenses. The video concludes with an invitation for viewers to ask questions for further clarification.

What is the basic structure of a normal infinitive?

• To + auxiliary verb + base form

• To + past participle

• To + verb + ing

• To + base form of the verb

Which of the following is an example of a normal infinitive?

• To go

• To have been

• To be running

• To have gone

What additional component does a perfect infinitive include compared to a normal infinitive?

• A preposition

• A modal verb

• A gerund form

• An auxiliary verb 'have'

Which of the following is a correct example of a perfect infinitive?

• To have seen

• To see

• To seen

• To be seeing

How does 'I want to go' differ from 'I want to have gone'?

• Both refer to past actions.

• Both refer to future actions.

• 'I want to go' refers to a current or future action, while 'I want to have gone' refers to a past action.

• 'I want to go' refers to a past action, while 'I want to have gone' refers to a future action.

In the sentence 'She is to have seen the show', what does the perfect infinitive indicate?

• A future action

• An ongoing action

• A current action

• A past action

What does the phrase 'the plane is to have arrived on time' imply?

• The plane is expected to arrive in the future.

• The plane was expected to arrive in the past.

• The plane is currently arriving.

• The plane will arrive soon.

Which of the following sentences uses a perfect infinitive correctly?

• She was to have seen the show.

• She will see the show.

• She is seeing the show.

• She is to see the show.

What is the main purpose of using a perfect infinitive?

• To describe an action that will happen in the future.

• To describe an action that is ongoing.

• To describe an action that has already happened.

• To describe an action that is happening now.

Which sentence correctly uses a perfect infinitive to describe a past action?

• I want to go to the store.

• I want to have gone to the store.

• I am going to the store.

• I will go to the store.