To conjugate the present simple to use the infinitive subjects "I", "you", "we" and "they" and another for "he", "she" and "it", we added a "-s" to end of the verb.
Structure
Interrogative Sentences: Auxiliary
verb ("to do") + subject + main verb.
Example: Do you talk? Does he eat?
Do they learn?
Negative Sentences: Subject +
auxiliary verb ("to do") + auxiliary
negative ("not") + main verb.
Example: I do not (don't) talk. he
does not (doesn't) eats. tehy do not
(don't) learn.
Uses: The simple present is
used things that usually happen.
to talk about
Affirmative Sentences:
Subject + main verb.
example: I talk. He eats.
They learn.
Present Perfect
Grammatical Rules
Form
Annotations:
To form the perfect present, the auxiliary verb "to have" in the present and the past participle of the verb is used.
Structure
Affirmative Sentences: Subject + verb
auxiliary ("to have") + past participle..
Example: I've talked to Peter. She's gone
to work. We've been to London.
Negative Sentences: Subject + auxiliary
verb ("to have") + "not" + past participle.
Example: I haven't talked to Peter. She
hasn't gone to work. We haven't been to
London.
Uses: The present perfect is used to describe an
experience.We do not use for specific actions.
Example: I have never flown in a plane.
Interrogative Sentences: Auxiliary verb ("to
have") + subject + past participle ...?
Example: Have you talked to Peter? Has she
gone to work? Have you been to London?
Present Perfect
Continuous
Grammatical Rules
Form
Annotations:
As in the present perfect, we use the auxiliary verb "to have" plus "been" (the past participle of the verb "to be") and the gerund of the verb.
Structure
Affirmative Sentences: Subject + auxiliary
verb ("to have") + "been" + gerund.
Example: They've been talking for three
hours. She has been studying English
since she was 16.
Negative Sentences: Auxiliary verb ("to
have") + subject + "been" + gerund?
Example: They haven't been talking for
more than a few minutes. She hasn't been
studying English for very long.
Uses: We use this time when we want to express
the sense of the continuity of an action that has
started in the past and that still lasts in this or that
just ended.
Interrogative Sentences: Auxiliary verb
("to have") + subject + "been" + gerund?
Example: Have they been talking for a long
time? Has Mary been waiting long?
Past Simple
Grammatical Rules
Form
Annotations:
To form the past simple regular verbs, add the ending "-ed" to the verb. The form is the same for all persons (I, you, he, she, it, we, They). Example:
want → wanted
learn → learned
stay → stayed
walk → walkedshow →showed
Structure
Affirmative Sentences: Subject + main verb.
Example: She was a doctor. The keys were in
the drawer. I wanted to dance.
Negative Sentences: With the verb to be:
Subject + "to be" + "not". Example: She
wasn't a doctor. The keys weren't in the
drawer. All other verbs: Subject + auxiliary
verb ("to do") + "not" + main verb. Example:
Subject + auxiliary verb ("to do") + "not" +
main verb. Example: I didn't want to dance.
He didn't learn English.
Uses: The simple past is used to talk about a specific
action that began and ended in the past.
Interrogative Sentences: With the verd to
be: "To be" + sujeto...? Example: Was she
a doctor? Were the keys in the drawer?
All other verbs: Auxiliary verb ("to do") +
subject + main verb ...? Example: Did you
want to dance? Did he learn English?
Exceptions: 1 For verbs that end in "e",
only add "-d. Examples: change → changed
2 If the verb ends in a short vowel and a
consonant (except "and" or "w"), double
the final consonant. Examples: stop →
stopped. 3 With verbs that end in a
consonant and a "and" change the "y" with
an "i". Examples: study → studied
Past Perfect
Grammatical Rules
Form
Annotations:
As in the present perfect, the past perfect is formed with the auxiliary verb "to have" and the past participle. The auxiliary verb is in the past.
Structure
Affirmative Sentences: Subject + "had" + past participle.
Example: I'd visited the Louvre before so I knew where the
Mona Lisa was.
Negative Sentences: Subject + "had" + "not" + past participle.
Example: I hadn't visited the Louvre before so I didn't know where
the Mona Lisa was.
Uses: We use the right to refer to an action
or event that started in the past and that is
before another action also in the past past.
Interrogative Sentences: "Had" + subject + past participle ...?
Example: How did you know where the Mona Lisa was? Had you
visited the Louvre before?
Past Continuous
Grammatical Rules
Form
Annotations:
To be continued past the auxiliary verb "to be" and the gerund (infinitive + "-ing") of the verb is used. The auxiliary verb "to be" is in the simple past, but keep in mind that "to be" is an irregular verb.
Structure
Affirmative Sentences: Subject + auxiliary verb ("to be") + gerund.
Example: I was talking. They were learning.
Negative Sentences: Subject + auxiliary verb ("to be") + "not" + gerund.
Example: I was not [wasn't] talking. They were not [weren't] learning.
Uses:The past continuous use it for a long
action and in the past was interrupted.
Interrogative Sentences: Auxiliary verb ("to be") + subject + gerund?
Example: Were you talking?Were you talking? Was he eating? Were
they learning?