Welcome friends,this is "english knowledge series" useful for learn English. First of all we will learn about tense:-
Present indefinite tense in complete knowledge of tense series part 2
Present continuous tense in complete knowledge of tense series part3
Present prefect tense in complete knowledge of tense series part 4
Present prefect continuous tense in complete knowledge of tense series part 5
Past indefinite tense in complete knowledge of tense series part 6
Past continuous tense in complete knowledge of tense series part 7
Past perfect tense in complete knowledge of tense series part 8
Past perfect continuous tense in complete knowledge of tense series part 9
Future indefinite tense in complete knowledge of tense series part 10
Future continuous tense in complete knowledge of tense series part 11
Future prefect tense in complete knowledge of tense series part 12
Future prefect continuous tense in complete knowledge of tense series part 13