वाक्य मे to be का use कब करते है!
March 23, 2017
#$%@4-
#$%@4-
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3825
 Progressive forms with be. The verb to be is used as an auxiliary to denote the progressive or continuous aspect of an action; it is thus used to form the "present progressive" and "past progressive" and other progressive tenses (also called the present continuous and past continuous tenses, etc.).
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