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Auxiliary Verb: "Did"
'Did' का प्रयोग

The key to talking about the Past Tense.

Concept: "Did" is the past form of "Do". It is used with ALL subjects (He, She, It, I, We, They, You) to make Negative sentences and Questions in the Past Tense.
(Did का प्रयोग सभी कर्ता के साथ भूतकाल में 'नकार' या 'सवाल' पूछने के लिए होता है।)

1. Negative Sentences (Did Not)

To say something did not happen in the past. Always use V1 after Did Not.

Formula: Subject + did not (didn't) + V1

English Sentence Hindi Meaning
I did not go there. मैं वहाँ नहीं गया।
She did not eat. उसने खाना नहीं खाया।
They did not play. वे नहीं खेले।

2. Interrogative Sentences (Questions)

To ask "Did this happen?". Put "Did" at the start.

Formula: Did + Subject + V1?

Question Hindi Meaning
Did you sleep? क्या तुम सोए?
Did he come? क्या वह आया?
Did it rain? क्या बारिश हुई?

⚠️ The Most Common Mistake

Never use Past Tense (V2) after Did.
"Did" is already past, so the main verb must be Present (V1).

4. Do vs. Did

Do / Does (Present) Did (Past)
Do you know him? (Now) Did you know him? (Before)
I do not like tea. I did not like tea.