Complex Subject Exercises

Before doing grammar exercises it’s useful to repeat the basics. 

Short Review of the Complex Subject

Complex Subject is a combination of a noun/pronoun and an infinitive. The predicate is placed between the noun and the infinitive.

Noun /Pronoun + Predicate + Infinitive

Split Infinitive Definition and Examples

A split infinitive is a sentence with an adverb or other words interposed between the to and the verbal.

Complex Object Exercises

English grammar exercises and activities for teaching Complex object to English language learners. Some exercises include answer keys.

Exercise 1 

Make up as many sentences as you can using the words and word-groups from each column of the substitution table. Pay attention that after verbs 'to see, to hear, to feel, to let, to make, etc...' the infinitive has no particle 'to' .

1) with the verb 'to see'

We He Everybody

see(s) saw

them a bricklayer my friend a boy the landlady

move to a summer cottage. lay a brick house. enter a two-storey house. draw a skyscraper. speak to her lodger. pull down a house.

Infinitive Worksheet

The forms and functions of the Infinitive: free exercises and answers to check your result.

Exercise  1
Define the forms of the Infinitive (Passive or Active; Indefinite, Continuous, Perfect or Perfect Continuous) in the following sentences.

1. I want to see your design.
2. It can be done.
3. The mistake must be found.
4. We knew him to be working in the room.
5. They are likely to be being served now.
6. I remember to have seen her somewhere.
7. We thought the mistake to have been found.
8. He must have been working all night.
9. She appeared to have been leading a very busy life before.
10. It’s nice to be sitting here with you.
11. It’s good to have finished work for the day.
12. I’m sorry not to have come on Friday.
13. I appear to have made a small mistake.
14. I didn’t expect to be invited.
15. There is a lot of work to do.
16. There is a lot of work to be done.

Infinitive Complex Subject

Complex Subject

Noun/Pronoun + Predicate + Infinitive

The combination of a noun in the common case (or a pronoun in the nominative case) and an infinitive forms a complex subject (1).
The predicate which is usually expressed by a verb in the passive voice  is placed between the noun and the infinitive. The relation between the noun and the infinitive is that of subject and predicate.

Note 1: - According to another interpretation the subject is expressed by a noun or pronoun and the infinitive is regarded as a part of the predicate.

Key examples:

• He is said to be a good teacher. 
• The boy is known to have passed his exams well. 

The predicate in sentences with a complex subject can be expressed by:

Infinitive Complex Object

Complex Object 

Subject + Predicate + Complex Object (Noun/Pronoun + Infinitive)

The combination of a noun in the common case or a pronoun in the objective case and an infinitive used after the predicate forms a complex object. The relation between the noun (pronoun) and the infinitive is that of subject and predicate.

Key examples:

• I saw the boy raise his hand. 
• I heard him call my name. 
• I want you to know that it doesn't matter. 

The Infinitive

The Forms of the Infinitive

	Active	Passive
Indefinite	to teach	to be taught
Continuous	to be teaching	to be being taught
Perfect	to have taught	to have been taught
Perfect Continuous	to have been teaching	---

The Indefinite Infinitive expresses an action simultaneous with that expressed by the finite verb.
E.g.: I shall be glad to see him.

The Continuous Infinitive denotes an action in progress simultaneous with that expressed by the finite verb.
E.g.: He seemed to be waiting for us.

The Perfect Infinitive denotes an action prior to that expressed by the finite verb.
E.g.: I am sorry to have troubled you.

The Perfect Continuous Infinitive denotes an action which lasted a certain time before the action of the finite verb.
E.g.: He proved to have been teaching English for ten years.

The Active Infinitive denotes that the subject is the doer of the action.
The Passive Infinitive denotes that the subject is acted upon.
E.g.: The man came to teach us English.
         The man came to be taught English.