The document discusses infinitives in English. It explains that infinitives are verb forms that are not conjugated for tense, and thus do not take suffixes like -s, -ing, or -ed. Infinitives are usually preceded by "to" and retain the base verb form. The only exceptions are the expressions "be used to" , "get used to", and "look forward to", where the verb after "to" takes the -ing form. Some examples of correct and incorrect uses of infinitives are provided.

1. INFINITIVES

2. In English many verbs can exist in a sentence.

3. In English many verbs can exist in a sentence.
My cousin lives in a town near here.

4. In English many verbs can exist in a sentence.
My cousin lives in a town near here.

5. In English many verbs can exist in a sentence.
My cousin lives in a town near here.
MAIN VERB

6. Mary didn’t want to come to school because she feels sick.

7. Mary didn’t want to come to school because she feels sick.

8. Mary didn’t want to come to school because she feels sick.

9. Mary didn’t want to come to school because she feels sick.

10. Mary didn’t want to come to school because she feels sick.
AUXILIARY

11. Mary didn’t want to come to school because she feels sick.
AUXILIARY MAIN VERB

12. Mary didn’t want to come to school because she feels sick.
AUXILIARY MAIN VERB
Does your sister know that you have found her money?

13. Mary didn’t want to come to school because she feels sick.
AUXILIARY MAIN VERB
Does your sister know that you have found her money?

14. Mary didn’t want to come to school because she feels sick.
AUXILIARY MAIN VERB
Does your sister know that you have found her money?
AUXILIARY

15. Mary didn’t want to come to school because she feels sick.
AUXILIARY MAIN VERB
Does your sister know that you have found her money?
AUXILIARY

16. Mary didn’t want to come to school because she feels sick.
AUXILIARY MAIN VERB
Does your sister know that you have found her money?
AUXILIARY
MAIN VERB

17. Mary didn’t want to come to school because she feels sick.
AUXILIARY MAIN VERB
Does your sister know that you have found her money?
AUXILIARY
MAIN VERB

18. Mary didn’t want to come to school because she feels sick.
AUXILIARY MAIN VERB
Does your sister know that you have found her money?
AUXILIARY
MAIN VERB AUXILIARY

19. Mary didn’t want to come to school because she feels sick.
AUXILIARY MAIN VERB
Does your sister know that you have found her money?
AUXILIARY
MAIN VERB AUXILIARY

20. Mary didn’t want to come to school because she feels sick.
AUXILIARY MAIN VERB
Does your sister know that you have found her money?
AUXILIARY
MAIN VERB AUXILIARY MAIN VERB

21. We are listening to this beautiful music you lent to us last week.

22. We are listening to this beautiful music you lent to us last week.

23. We are listening to this beautiful music you lent to us last week.

24. We are listening to this beautiful music you lent to us last week.

25. We are listening to this beautiful music you lent to us last week.
AUXILIARY

26. We are listening to this beautiful music you lent to us last week.
AUXILIARY MAIN VERB

27. We are listening to this beautiful music you lent to us last week.
AUXILIARY MAIN VERB
They need to see what you did with their investment.

28. We are listening to this beautiful music you lent to us last week.
AUXILIARY MAIN VERB
They need to see what you did with their investment.
MAIN VERB

29. We are listening to this beautiful music you lent to us last week.
AUXILIARY MAIN VERB
They need to see what you did with their investment.
INFINITIVE
MAIN VERB

30. Main verbs and auxiliary verbs are “conjugated”. That means a subject “does”, “is
doing”, “did”, “will do”, etc something.

31. Main verbs and auxiliary verbs are “conjugated”. That means a subject “does”, “is
doing”, “did”, “will do”, etc something.
INFINITIVES ARE NOT “CONJUGATED” SO THEY HAVE NO TENSE. They do not add
s/es, ing, or ed nor do they come in the past form in case they are irregular.

32. Main verbs and auxiliary verbs are “conjugated”. That means a subject “does”, “is
doing”, “did”, “will do”, etc something.
INFINITIVES ARE NOT “CONJUGATED” SO THEY HAVE NO INFLECTION. They do
not add s/es, ing, or ed nor do they come in the past form in case they are
irregular.
These sentences are incorrect
because they use the spelling of a
conjugation in the infinitive:

33. Main verbs and auxiliary verbs are “conjugated”. That means a subject “does”, “is
doing”, “did”, “will do”, etc something.
INFINITIVES ARE NOT “CONJUGATED” SO THEY HAVE NO TENSE. They do not add
s/es, ing, or ed nor do they come in the past form in case they are irregular.
These sentences are incorrect Juan Pablo needs to explaining the class.
because they use the spelling of a
conjugation in the infinitive:

34. Main verbs and auxiliary verbs are “conjugated”. That means a subject “does”, “is
doing”, “did”, “will do”, etc something.
INFINITIVES ARE NOT “CONJUGATED” SO THEY HAVE NO TENSE. They do not add
s/es, ing, or ed nor do they come in the past form in case they are irregular.
These sentences are incorrect TO EXPLAIN
Juan Pablo needs to explaining the class.
because they use the spelling of a
conjugation in the infinitive:

35. Main verbs and auxiliary verbs are “conjugated”. That means a subject “does”, “is
doing”, “did”, “will do”, etc something.
INFINITIVES ARE NOT “CONJUGATED” SO THEY HAVE NO TENSE. They do not add
s/es, ing, or ed nor do they come in the past form in case they are irregular.
These sentences are incorrect TO EXPLAIN
Juan Pablo needs to explaining the class.
because they use the spelling of a
conjugation in the infinitive:
They want to studied today.

36. Main verbs and auxiliary verbs are “conjugated”. That means a subject “does”, “is
doing”, “did”, “will do”, etc something.
INFINITIVES ARE NOT “CONJUGATED” SO THEY HAVE NO TENSE. They do not add
s/es, ing, or ed nor do they come in the past form in case they are irregular.
These sentences are incorrect TO EXPLAIN
Juan Pablo needs to explaining the class.
because they use the spelling of a
conjugation in the infinitive: TO STUDY
They want to studied today.

37. Main verbs and auxiliary verbs are “conjugated”. That means a subject “does”, “is
doing”, “did”, “will do”, etc something.
INFINITIVES ARE NOT “CONJUGATED” SO THEY HAVE NO TENSE. They do not add
s/es, ing, or ed nor do they come in the past form in case they are irregular.
These sentences are incorrect TO EXPLAIN
Juan Pablo needs to explaining the class.
because they use the spelling of a
conjugation in the infinitive: TO STUDY
They want to studied today.
She loves to swims in the sea.

38. Main verbs and auxiliary verbs are “conjugated”. That means a subject “does”, “is
doing”, “did”, “will do”, etc something.
INFINITIVES ARE NOT “CONJUGATED” SO THEY HAVE NO TENSE. They do not add
s/es, ing, or ed nor do they come in the past form in case they are irregular.
These sentences are incorrect TO EXPLAIN
Juan Pablo needs to explaining the class.
because they use the spelling of a
conjugation in the infinitive: TO STUDY
They want to studied today.
TO SWIM
She loves to swims in the sea.

39. The only exception, where a verb that comes after a “to” uses ing, is when using the
expressions are:

40. The only exception, where a verb that comes after a “to” uses ing, is when using the
expressions are:
BE USED/ACCUSTOMED TO or GET USED/ACCUSTOMED TO.
LOOK FORWARD TO.

41. The only exception, where a verb that comes after a “to” uses ing, is when using the
expressions are:
BE USED/ACCUSTOMED TO or GET USED/ACCUSTOMED TO.
LOOK FORWARD TO.
My father gets used/accustomed to listening to his friends when they talk too much

42. The only exception, where a verb that comes after a “to” uses ing, is when using the
expressions are:
BE USED/ACCUSTOMED TO or GET USED/ACCUSTOMED TO.
LOOK FORWARD TO.
My father gets used/accustomed to listening to his friends when they talk too much

43. The only exception, where a verb that comes after a “to” uses ing, is when using the
expressions are:
BE USED/ACCUSTOMED TO or GET USED/ACCUSTOMED TO.
LOOK FORWARD TO.
My father gets used/accustomed to listening to his friends when they talk too much
We are used/accustomed to staying in this hotel.

44. The only exception, where a verb that comes after a “to” uses ing, is when using the
expressions are:
BE USED/ACCUSTOMED TO or GET USED/ACCUSTOMED TO.
LOOK FORWARD TO.
My father gets used/accustomed to listening to his friends when they talk too much
We are used/accustomed to staying in this hotel.

45. Most of the times, an infinitive is preceded by a “TO”.

46. Most of the times, an infinitive is preceded by a “TO”.
Everyone wanted to go.

47. Most of the times, an infinitive is preceded by a “TO”.
Everyone wanted to go.

48. Most of the times, an infinitive is preceded by a “TO”.
Everyone wanted to go.
They can come after a verb that is conjugated.

49. Most of the times, an infinitive is preceded by a “TO”.
Everyone wanted to go.
They can come after a verb that is conjugated.
She refuses to come to my house.

50. Most of the times, an infinitive is preceded by a “TO”.
Everyone wanted to go.
They can come after a verb that is conjugated.
She refuses to come to my house.
MAIN VERB INFINITIVE
(conjugated)

51. Most of the times, an infinitive is preceded by a “TO”.
Everyone wanted to go.
They can come after a verb that is conjugated.
She refuses to come to my house.
MAIN VERB INFINITIVE
(conjugated)

52. Most of the times, an infinitive is preceded by a “TO”.
Everyone wanted to go.
They can come after a verb that is conjugated.
She refuses to come to my house. They want to see you now.
MAIN VERB INFINITIVE
(conjugated)

53. Most of the times, an infinitive is preceded by a “TO”.
Everyone wanted to go.
They can come after a verb that is conjugated.
She refuses to come to my house. They want to see you now.
MAIN VERB INFINITIVE MAIN VERB INFINITIVE
(conjugated) (conjugated)

54. They can come after the object of a sentence.

55. They can come after the object of a sentence.
The teacher needs Maria to come.

56. They can come after the object of a sentence.
The teacher needs Maria to come.
MAIN VERB
(conjugated)

57. They can come after the object of a sentence.
The teacher needs Maria to come.
MAIN VERB
(conjugated)
OBJECT

58. They can come after the object of a sentence.
The teacher needs Maria to come.
MAIN VERB
INFINITIVE
(conjugated)
OBJECT

59. They can come after the object of a sentence.
The teacher needs Maria to come.
MAIN VERB
INFINITIVE
(conjugated)
OBJECT
The base form of the verb can work as an infinitive when preceded by the
verbs make, have, let and help. Help can be followed by an infinitive or the
base form.

60. They can come after the object of a sentence.
The teacher needs Maria to come.
MAIN VERB
INFINITIVE
(conjugated)
OBJECT
The base form of the verb can work as an infinitive when preceded by the
verbs make, have, let and help. Help can be followed by an infinitive or the
base form.
SUBJECT MAIN VERB OBJECT BASE/INFINITIVE COMPLEMENT
Camila makes me feel good.
Juan helped Camila (to) find her purse.
She has her students copy the questions.
Dad let us go out.