Tenses

There are three tenses in English grammar

1. Present
2. Past
3.  Future 

Present:  There are four kinds in present tense

• Indefinite
• continuous
• perfect
• perfect continuous          

Past: There are four kinds in past tense

• Indefinite
• continuous
• perfect
• perfect continuous          

Future:There are four kinds in future tense

     

• Indefinite
• continuous
• perfect
• perfect continuous                                           

There are four types in each kind of a tense  Affirmative,negative,interrogative and,double interrogative

                               CHART OF TENSES 

Formulas                                                                        Examples

                                               Present Indefinite Tense         

Affirmative

s.sub.+m.v.+s/es+o                                                                               He writes a letter.

p.sub.+m.v.+o                                                                                       We write letters.

Negative

s.sub.+does not+m.v.+o                                                                       He does not write a letter. 

p.sub.+do not+m.v.+o                                                                          We do not write letters.

Interrogative
does+s.sub.+m.v.+o.+?                                                                        Does he write a letter?
do+p.sub.+m.v.+o+?                                                                            Do we write letters?
Double Interrogative
Q.word+does+s.sub.+m.v.+o.+?                                                         When does he write a letter?
Q.word+do+p.sub.+m.v.+o+?                                                             Why do we write letters?

                                            Past Indefinite Tense

Affirmative

s.sub.+v2nd form.+o                                                                             He wrote a letter.

p.sub.+v2nd form.+o                                                                             We wrote letters.

Negative

s.sub.+did not+m.v.+o                                                                           He did not write a letter. 

p.sub.+did not+m.v.+o                                                                           We did not write letters.

Interrogative
Did+s.sub.+m.v.+o.+?                                                                            Did he write a letter?
Did+p.sub.+m.v.+o+?                                                                             Did we write letters?
 Double Interrogative
Q.word+did+ s.sub.+m.v.+o.+?                                                              When did he write a letter?
Q.word+did+p.sub.+m.v.+o+?                                                                Why did we write letters?

                                           Future Indefinite Tense

Affirmative

s.sub.+will/shall+m.v..+o                                                                      He will write a letter.

p.sub.+will/shall+m.v.+o                                                                      We shall write letters.

Negative

s.sub.+will/shall not+m.v.+o                                                                 He will not write a letter. 

p.sub.+will/shall not+m.v.+o                                                                We shall not write letters.

Interrogative
Will/shall+s.sub.+m.v.+o.+?                                                                 Will he write a letter?
Will/shall+p.sub.+m.v.+o+?                                                                  Shall we write letter
 Double interrogativ
Interrogative.word+will/shall+ s.sub.+m.v.+o.+?                                 When will he write a letter ?  Interrogative.word+will/shall+ p.sub.+m.v.+o.+?                                 Why will we write letters?