English Verb Tenses by Kent Uchiyama is a very good verb tense book for learners of English as a second language. Available for free download, this 174-page PDF e-book explains all the verb tenses of English in an informal manner and gives students all they need to know to use the tenses correctly.
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Site URL: http://www.chabotcollege.edu/languagearts/esl/verbtensebook.asp
Kent Uchiyama's Verb Tense Book
Posted on Wednesday, April 29, 2009 | Filed under Grammar