The document provides information on the present perfect tense versus the simple past tense in English. It outlines the verb forms, uses, and time expressions used with each tense. The present perfect is used for unfinished or ongoing actions connected to the present, while the simple past is used for finished actions and actions with a definite time in the past. Examples are provided to illustrate the uses of each tense. Exercises are included for students to practice using the present perfect and simple past correctly.

1. UNIDAD
1 Present Perfect
Vs
Simple Past
ENGLISH III
Carrera: Técnico Superior en Desarrollo Integral Infantil

2. PRESENT PERFECT
vs
SIMPLE PAST

3. VERBS FORM
Present Perfect
Affirmative:
HAVE / HAS + PAST PARTICIPLE
Negative:
HAVE NOT / HAS NOT + PAST
PARTICIPLE
Interrogative:
HAVE / HAS + Subject + PAST
PARTICIPLE?
Simple Past
 Affirmative:
SIMPLE PAST
 Negative:
DID NOT + SIMPLE PRESENT
 Interrogative:
DID + Subject + SIMPLE PRESENT?

4. We use the PRESENT
PERFECT when :
 Finished events connected with the present
 We are not interested in the time of the action but in
the results of that action which is connected to the
present.
 Unstated/ Indefinite time
 Unfinished action
 Past action connected to the present

5. FOR / SINCE (prepositions)
FOR
When we mention the
length of a period of
time.
I worked here for 10
years.
SINCE
When we mention the
starting point of time.
I worked here since 2010

6. EVER / NEVER
Ever
It is used in questions.
Position :
Have / has + subject + EVER + past participle.
Have you ever visited Australia?
Never
It is used in affirmative sentences, and answers
Position :
Have / has + NEVER + past participle.
I have never visited Australia

7. We use the PRESENT PERFECT
with the following TIME ADVERBS:
Just
 Just indicates a very short time before now.
 The event or action has just finished.
I have finished the test 5 minutes ago
Already
 It indicates at some time before now.
 The action or event may has happened sooner than expected.
 It is used in affirmative sentences.
 POSITION: have / has + ALREADY + past participle.
I have already finished the test

8. We use the PRESENT PERFECT
with the following TIME ADVERBS:
Yet
 It indicates that the action or event expected hasn’t happened,
not until now.
 It is used in negative and interrogative sentences.
 POSITION: at the end of the sentence.
I have not finished the test yet
Have you finished the test yet?

9. We use the Simple Past when :
 Stated/Definite time
 Finished action
 Past action with no connection to the present
 To express an activity completed in the past

10. KEY WORDS
Yesterday
Last week,
Last night
Two days ago
On Saturday
Last weekend
Etc…

11. Spelling rules
Infinitive + ed/d
visit – visited
love – loved
Vowel + y: ed enjoy – enjoyed
Consonant + y: ied study – studied
One-syllable verb
1 vowel + 1consonant:
Double consonant + ed
stop – stopped
bat – batted
Two-syllable with stress
on second syllable and
ending with a single
consonant:
Double consonant + ed
permit – permitted
commit – committed

12. I worked
He, she, it worked
We, you, they
Affirmative

13. He built a house.
She bought a car
He drove a car
They cooked a cake
he painted the wall

14. I didn’t play
work
Watch
He, she, it didn’t
We, you, they didn’t
Negative
Subject + didn’t + infinitive

15. Interrogative
did +Subject + infinitive?
Did I
play?
work?
like?
Did he, she, it
Did we, you, they

16. SOLVE THE FOLLOWING EXERCISES
1. She loves Paris. She ..................... (be) there many times.
2. Bill ....................... (work) in that company for 3 years.
3. They ....................... (go) to London on holiday last summer.
4. I ....................... (read) that book. It´s good.
5. His parents ....................... (be) here yesterday.
6. They ....................... (go) to Germany when he ....................... (be) only 4.
7. ........... you ......... (watch) any film last night?
8. I ....................... (have) a couple of toasts for breakfast this morning.
9. He ....................... (live) in Rome since he was a teenager.
10. The house looks different. .......... you .............. (paint) it?
11. I ....................... (not see) you in class last Friday.
12. Shakespeare ....................... (write) over one hundred sonnets.