In this Tense work has already been completed in previous time. It is over now.
For this, with’ had’ third form of verb is used for all the persons.
For example :
- Girls had sung a song.
- We had finished our work.
- I had taken my food.
- You had taken your examination.
In these sentences ‘not’ is used after had and third form of verb is used for all the persons.
For example :
- She had not prepared food.
- I had not met him before.
- You had not left the room.
- They had not made any mistake.
In these sentences ‘had’ is used before subject and third form of verb is used for all the persons.
A sign of interrogation is used at the end of the sentence.
- Had you gone to the market ?
- Had the boys played a match on that day ?
- Had we taken our food ?
- Had he gone out for a walk?
Similarly in interrogative negative sentences Had is used before subject and not is used before third form of verb.
- Had she not helped you?
- Had you not taken your examination seriously?
- Had the house not elected him as president?
In some sentences out of two actions one is dependent on the other.
“If you had worked hard, you would have succeeded.”
In this sentence, action in respect of verb ‘work’ was to be done in past and its effect was to be seen in present time i.e. work hard related to past whereas action of verb ‘succeed’ related to present time.
In this, in the main part of sentence, third form of verb with had is used In the second part with would have,third form of verb is used.
“If you had walked faster, you would have caught the train.”
The first part of the sentence can also be written in this way :
- Had you worked hard , you would have succeeded.
- Had you walked faster you would have caught the train.
Here ” Had you worked hard ” = ” If you had worked hard”.