This article is for Hindi medium students; who face problem in English conversation in past tense. If you go through this article. Then I assure you that you can teach others about past tense. 1.तुमने लिखा।=S+V ( S =subject, V =verb, O =Object) 2.तुमने पत्र लिखा। =S+ O +V 3.तुमने एक पत्र लिखा। S+ O +V 4.तुमने कल एक पत्र लिखा। S+ O +V 1.तुमने लिखा।=You wrote. S +V 2.तुमने पत्र लिखा। =You wrote letter . S +V + O 3.तुमने एक पत्र लिखा।= You wrote a letter . S +V + O 4.तुमने कल एक पत्र लिखा।= You wrote a letter yesterday . S +V + O In this video the learning for conversation has started very simply. Ii is very interesting. In Hindi verb never changes its look. See these examples. तुमने लिखा । मैंने लिखा । उसने लिखा । वे सबने लिखा । हम सबने लिखा । मोहन ने लिखा । In above sentences it has been noticed that the verb in a particular sentences never changes even if subjects or objects are changed.