Adverbs Active Voice and Passive Voice Adjectives Comparative Superlative Adjectives Articles - Indefinite and Definite Auxiliary Verb (Main) Auxiliary Verb - am Auxiliary Verb - is Auxiliary Verb are Auxiliary Verb be Auxiliary Verb Can Auxiliary Verb could Auxiliary Verb did Auxiliary Verb do Auxiliary Verb had Auxiliary Verb has Auxiliary Verb Have Auxiliary Verb May Auxiliary Verb Might Auxiliary Verb Must Auxiliary Verb Need Auxiliary Verb Shall Auxiliary Verb Should Auxiliary Verb Was Auxiliary Verb Were Auxiliary Verb will Auxiliary Verb Would Conjunctions - Coordinating and Correlative Conjunctions - Subordinating Conjunctive Adverbs Nouns Count Nouns Possessive Nouns Pronouns Verbs Irregular Verbs Gerunds Infinitives Progressive and Perfect Tense Indicative, Imperative, Subjunctive Mood Preposition (Main) Prepositions (List) Prepositions about Prepositions at Prepositions by Prepositions for Prepositions above Prepositions after Prepositions against Prepositions before Prepositions below Prepositions between Prepositions during Prepositions in Prepositions into Prepositions on Prepositions through Interjections

Auxiliary Verb: "Could"
'Could' का प्रयोग

Past Ability, Polite Requests, and Possibility.

Concept: "Could" is the past form of "Can". It is also used to ask for something very politely.
(Could 'Can' का पास्ट रूप है। इसका प्रयोग विनम्रता से सवाल पूछने के लिए भी होता है।)

1. Ability in the Past (भूतकाल की क्षमता)

Used to talk about what you were able to do in the past.

English Sentence Hindi Meaning
I could run fast when I was young. जब मैं जवान था, मैं तेज दौड़ सकता था।
She could not come yesterday. वह कल नहीं आ सकी (पायी)।
He could speak French before. वह पहले फ्रेंच बोल सकता था।

2. Polite Request (विनम्र निवेदन)

Used to ask for something respectfully. It is more polite than "Can".

Sentence Hindi Meaning Tone
Could you help me? क्या आप मेरी मदद कर सकते हैं? Very Polite
Could I use your phone? क्या मैं आपका फोन इस्तेमाल कर सकता हूँ? Respectful
Could you open the door? क्या आप दरवाजा खोल सकते हैं? Polite

3. Possibility (संभावना)

Used when something is possible but not certain (Weak possibility).

Difference: Can vs Could

Can (Present/Informal) Could (Past/Polite)
I can do it. (Now) I could do it. (Past)
Can I go? (Friendly) Could I go? (Respectful)