The imperfect is a verb form that combines past tense and imperfective aspect (reference to a continuing or repeated event or state). This tense indicates a habit in the past or repeated past action.
To frame the sentence, you club Lesson 12 and Lesson 15.
First, we frame a simple present tense sentence, and then, instead of the present tense indicator, we use appropriate past tense indicator.
Example:
I used to eat meat – मैं मांस खाता था – main maans khaata tha – said by a male.
I used to eat meat – मैं मांस खाती थी – main maans khatee thee – said by a female.
You used to eat meat – तू मांस खता था – tu maans khata tha – said to a male.
You used to eat meat – तू मांस खाती थी – tu maans khatee thee – said to a female.
You used to eat meat – तुम मांस खाते थे – tum maans khate the – said to a male.
You used to eat meat – तुम मांस खाती थी – tum maans khatee thee – said to a female.
You used to eat meat – आप मांस खाते थे – aap maans khate the – said to a male or a group of males (this sentence can be used in both singular and plural meaning). The same sentence can also be said to a group of males and females.
You used to eat meat – आप मांस खाती थी – aap maans khatee thee – said to a female or a group of females (this sentence can be used in both singular and plural meaning).
He used to eat meat – यह/वह मांस खता था – yah/vah maans khata tha
She used to eat meat – यह/वह मांस खाती थी – yah/vah maans khatee thee
We used to eat meat – हम मांस खाते थे – hum maans khate the – said by a group of males. The same sentence can also be said by a group of males and females.
We used to eat meat – हम मांस खाती थी – hum maans khatee thee – said by a group of males. The same sentence can also be said by a group of males and females.
They used to eat meat – ये/वे मांस खाते थे – ye/ve maans khate the – said to a group of males. The same sentence can also be said to a group of males and females.
They used to eat meat – ये/वे मांस खाती थी – ye/ve maans khatee thee – said to a group of females.
One more variation is used in Hindi for “Used to”.
आ करता था – aa karta tha (m,s), आ करती थी – aa kartee thee (f, s, p), आ करते थे – aa karte the (m, p). The आ aa sound is added to the verb.
Examples:
I used to talk to him – मैं उससे बात किया करता था – main us-se baat kiyaa karta tha
She used to write letters to me – वह मुझे पत्र लिखा करती थी – Vah mujhe patr likha kartee thee
He used to go to Delhi – वह दिल्ली जाया करता था – Vah dilli jaaya karta tha