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Tenses
  1. What is tense? Answer

  2. Tenses are applicable to declarative sentences and questions. Answer

  3. What are example sentences with various tenses starting with the pronoun “I” in English language? Answer

  4. What are examples of sentences in 12 tenses with the verb investigate and its conjugated forms? Answer


Tenses
What is tense?
Tense refers mainly to the time - past, present, and future.

What is an English grammatical tense?
An English grammatical tense is a sentence with tense that points to the past, present, or future time. Tenses are applicable to declarative sentences and questions.

How many English grammatical tenses are there?
At least 16. If you include conditionals with could or would, there are more.

Tenses are applicable to declarative sentences and questions.
Who investigates this case? Present simple tense
Who is investigating this case? Present continuous tense
Who has investigated this case? Present perfect tense
Who has been investigating this case? Present perfect continuous tense
Who investigated this case? Past simple tense
Who was investigating this case? Past continuous tense
Who had investigated this case? Past perfect tense
Who had been investigating this case? Past perfect continuous tense
Who will investigate this case? Future simple tense
Who will be investigating this case? Future continuous tense
Who will have investigated this case? Future perfect tense
Who will have been investigating this case? Future perfect continuous tense

What are example sentences with various tenses starting with the pronoun “I” in English language?
Tense Example Sentence
Present simple tense I investigate this case.
Present continuous tense I am investigating this case.
Present perfect tense I have investigated this case.
Present perfect continuous tense I have been investigating this case.
Past simple tense I investigated this case.
Past continuous tense I was investigating this case.
Past perfect tense I had investigated this case.
Past perfect continuous tense I had been investigating this case.
Future simple tense I will investigate this case.
Future continuous tense I will be investigating this case.
Future perfect tense I will have investigated this case.
Future perfect continuous tense I I will have been investigating this case.
Conditional simple tense I would investigate this case.
Conditional continuous tense I would be investigating this case.
Conditional perfect tense I would have investigated this case.
Conditional perfect continuous tense I would have been investigating this case.
1. Structure of the present simple tense in English

Subject + base form of verb
except in the third-person singular, when we add -s
I investigate this case.
except in the third-person singular, when we add -s

What is a third-person singular pronoun?
He, she, it

What is a third-person singular verb?
Investigates

What are examples of the conjugation of the verb investigate?
To investigate (infinitive), investigate (base form of verb), investigates (third-person singular), investigated (past participle), investigating (present participle)

Match the third-person singular pronoun with the third-person singular verb.
He/she investigates.
It can be a dog.
It barks.

I/you/we/they investigate.
He/she investigates.

What is he/she/it?
Third-person singular pronoun.

What are first-, second-, and third-person pronouns?
Person Subjective Case Possessive Case/Possessive Determiner
First-Person Singular I my
Second-Person Singular you your
Third-Person Singular he/she/it his/her/its
First-Person Plural we our

“Be” is also an exception.
Be in the present simple:
I am
You are
He/she/it is
We are
They are

I investigate this case.
Dr. Asif Qureshi investigates this case.

Which is correct?
A. I am writing this complaint to you. (Correct)
B. I are writing this complaint to you. (Incorrect)
Why is number 1 correct? Why is this sentence correct?
The word “am” is only used with the pronoun “I.”
The subject “I” matches the verb “am.”
This is an English grammar rule.
I + am is an English grammar rule.
I am writing this complaint to you. (Correct)

2. Structure of the present continuous tense in English

Subject + be + verb-ing
I am investigating this case.
I am investigating this case on Tuesday. Use this for arrangements in the future.
It is snowing.
She is investigating this case on Tuesday.
They are investigating this case.
We are investigating this case next Tuesday.
Dr. Asif Qureshi is investigating this case next Tuesday in Chicago.

3. Structure of the present perfect tense in English

Subject + have/has + past participle

I have investigated this case.
She has investigated this case.
Dr. Asif Qureshi has investigated this case.

He has been to Chicago three times.
We have met Dr. Asif Qureshi.
I have read all of Dr. Asif Qureshi’s books.
I have eaten breakfast.
Ms. Lopez has lost her keys.

4. Structure of the present perfect continuous tense in English

Subject + have/has + been + verb-ing
I have been investigating this case.

5. Structure of the past simple tense in English

Subject + past simple/past participle
I investigated this case.

6. Structure of the past continuous tense in English

Subject + was/were + verb-ing

I was investigating this case.
I was investigating this case at 7 PM yesterday.

7. Structure of the past perfect tense in English

Subject + had + past participle
I had investigated this case.

8. Structure of the past perfect continuous in English

Subject + had been + verb-ing

I had been investigating this case.

9. Structure of the future simple tense in English

Subject + will + base form of verb
I will investigate this case.

10. Structure of the future continuous tense in English

Subject + will be + verb-ing
I will be investigating this case.

11. Structure of the future perfect tense in English

Subject + will have + past participle
I will have investigated this case.

12. Structure of the future perfect continuous tense in English

Subject + will have been + verb-ing
I will have been investigating this case.

13. Structure of the conditional simple tense in English

Subject + would + base form of the verb
I would investigate this case.

You can also use could/should/might, but this will change the meaning.

14. Structure of the conditional continuous tense in English

Subject + would be + verb-ing
I would be investigating this case.

15. Structure of the conditional perfect tense in English

Subject + would have + past participle
I would have investigated this case.

16. Structure of the conditional perfect continuous tense in English

Subject + would have been + verb-ing
I would have been investigating this case.

Also see irregular verbs.
You can use could/should/might, but this will change the meaning.

It is a free public service.
The government must remunerate and reimburse the author of these guidelines, Dr. Asif Qureshi, for circulating these public academic services.

What are examples of sentences in 12 tenses with the verb investigate and its conjugated forms?
Present tenses
Present simple tense Rule: subject + investigate / investigates + object
Doctor Asif Qureshi investigates this case.
Present continuous tense Rule: subject + is/am/are + Investigating + object
Doctor Asif Qureshi is investigating this case.
Present perfect tense Rule: subject + has/have + Investigated + object
Doctor Asif Qureshi has investigated this case.
Present perfect continuous tense Rule: subject + has/have been + communicating + object
Doctor Asif Qureshi has been investigating this case.
Past tenses
Past Simple tense Rule: subject + investigated + object
Doctor Asif Qureshi investigated this case.
Past continuous tense Rule: subject + was/were + investigating + object
Doctor Asif Qureshi was investigating this case.
Past perfect tense Rule: subject + had + investigated + object
Doctor Asif Qureshi had investigated this case.
Past perfect continuous tense Rule: subject + had been + investigating + object
Doctor Asif Qureshi had been investigating this case.
Future tenses
Future simple tense Rule: subject + shall/will investigate + object
Doctor Asif Qureshi will investigate this case.
Future continuous tense Rule: subject + shall/will be + investigating + object
Doctor Asif Qureshi will be investigating this case.
Future perfect tense Rule: subject + shall/will have + investigated + object
Doctor Asif Qureshi will have investigated this case.
Future perfect continuous tense Rule: subject + shall/will have been + investigating + object
Doctor Asif Qureshi will have been investigating this case.

Tense
What is tense?
What are names of various English language tenses?
How should you practice English language tenses?
How do we make various English language tenses?
What are the various forms of each verb tense sentence?
How many total verb tenses are there?
How many tenses are there in the English language?
Present Simple
    Positive sentences
      Active / Passive Forms
    Negatives sentences
    Questions
Present Continuous Positive sentences
Negatives sentences
Questions
Present Perfect Simple
English language sentence classification by purpose.
What is English language sentence classification by purpose?
Some also call this classification as sentences by structures or variety.
English language sentence classification depending on the number and type of clauses.
What is English language sentence classification depending on the number and type of clauses?
English language sentence classification by verb tense of sentence.
Interrogative, declarative sentences can be written in various tenses.
Can imperative and exclamatory sentences be written in various tenses?
What is English language sentence classification by verb tense of sentence?
Tense
What is tense?
What are names of various English language tenses?
How should you practice English language tenses?
How do we make various English language tenses?
What are the various forms of each verb tense sentence?
How many total verb tenses are there?
How many tenses are there in the English language?
What is English language sentence classification by verb tense of sentence?
Present Simple
    Positive sentences
      Active / Passive Forms
    Negatives sentences
    Questions
Present Continuous
    Positive sentences
    Negatives sentences
    Questions
Present Perfect Simple
    Positive sentences
    Negatives sentences
    Questions
Present Perfect Continuous
    Positive sentences
    Negatives sentences
    Questions
Past Simple
    Positive sentences
    Negatives sentences
    Questions
Past Continuous
    Positive sentences
    Negatives sentences
    Questions
Past Perfect Simple
    Positive sentences
    Negatives sentences
    Questions
Past Perfect Continuous
    Positive sentences
    Negatives sentences
    Questions
Future Simple
    Positive sentences
    Negatives sentences
    Questions
Future Continuous
    Positive sentences
    Negatives sentences
    Questions
Future Perfect Simple
    Positive sentences
    Negatives sentences
    Questions
Future Perfect Continuous
    Positive sentences
    Negatives sentences
    Questions
The progressive family includes the present progressive (am, are, or is eating), past progressive (was or were eating), future progressive (will or shall be eating), and the conditional progressive (could, would, must, might, may, or can be running).
How do you use the personal pronoun I to write twelve tenses in simple declarative sentences?
How do you use an interrogative pronoun to write twelve tenses in simple interrogative sentences?
What is tense?
What is the difference between past tense, present tense, and future tense?
What are the types of past, present, and future tense?
Can you give examples of past, present, and future tense?
Present Perfect Simple Tense
Exercise on Present Perfect Simple
How do you make a present perfect simple tense beginning with the pronoun I in a simple declarative sentence?
I have a question.
What is the tense of this sentence?
How do you make a present perfect simple tense having the pronoun I in a simple question?
How do you write a declarative sentences using the first person I, me, my, we, our?
How do you write a declarative sentences using the second person you and your?
How do you write a declarative sentences using the third person he, she, it, they, their, his, hers, him, her?
What should you include next to an interrogative pronoun to make it an interrogative sentence?
What is Tense?
How do we make the tense?
When and why do we use the tense?
Present tense.
It is a group of different sentences.
What are different types of present tenses?
How do you write a "present perfect tense" question?
How do you write a "simple past tense" question?
What types of tenses are used most commonly in newspapers?
What types of tenses are used most commonly in spoken language and letters?
What types of tenses are used most commonly to write a book?
Simple Present Tense

How do we make the Simple Present Tense?
How do we use the Simple Present Tense?
How do you write a "simple present tense" question?
Which is correct, "Simple Present Tense", "Present Simple Tense" or "both"?
Do you follow present simple tense terminology or simple present tense?
What are the types of present simple tense sentences?
What are the types of present simple tense sentences you follow?
Word Order in Positive Sentences
Word Order in Negative Sentences
Word Order in Subordinate Clauses
Position of Time Expressions
Position of Adverbs
Word Order in Questions
1. Present Simple Tense - To Be - am are is
There is/There are
2. Present Simple Tense - To Be - Negative
'm not aren't isn't
3. Present Simple Tense - To Be - Questions - Am Are Is
Am I correct?
4. Present Simple Tense - To Have
have or has
5. Present Simple Tense - main verb
verb (+ s/es for third person)
6. Present Simple Tense - Questions (Do/Does)
7. Present Simple Tense - "Wh" Questions - Where When Who What How Which
8. Present Tense - Short Answers
9. Present Tense - Don't or Doesn't
10. Present Simple 'Be' Wh Questions
Present Perfect Tense - For and Since
For present perfect, add have plus the past participle:
I have _____________ many times before.
has/have + past participle
Present Continuous Tense
am/is/are + present participle
Present Perfect Continuous Tense
I have been doing
has/have been + present participle
Past Tense
Simple Past Tense
I did do, I did
Simple Past Tense - Questions

past form only
or
auxiliary did + base form
verb + d/ed/t (except for irregular verbs)
Positive sentences
Negatives sentences
Questions
1) Questions without question words in the Simple Past
2) Questions with question words in the Simple Past
Past Continuous Tense
I was doing
was/were + present participle
Past Perfect Tense
For past perfect, add had plus the past participle:
I had ___________ many times before.
I had done
had + past participle
Past Perfect Continuous Tense
I had been doing

had been + present participle
Future Tense
Simple Future Tense
I will do
will + verb
am/is/are going to + verb
Future Continuous Tense
I will be doing
will be + present participle
am/is/are going to be + present participle
Future Perfect Tense
For future perfect, add will have plus the past participle:
By Friday, I will have ___________ many times.
I will have done
will have + past participle
am/is/are going to have + past participle
Future Perfect Continuous Tense
I will have been doing
will have been + present participle
am/is/are going to have been + present participle
Would you like to elaborate on these topics?