Professor Mark Lester
Mark Lester is an experienced grammarian, ESL expert, and professor emeritus of Eastern Washington University. He is the author or coauthor of more than a dozen books, including Practice Makes Perfect: Advance English Grammar for ESL Learners, Practice Makes Perfect English Verb Tenses Up Close, The McGraw-Hill Handbook of English Grammar and Usage, and The Big Book of English Verbs .
Mark Lester is an experienced grammarian, ESL expert, and professor emeritus of Eastern Washington University. He is the author or coauthor of more than a dozen books, including Practice Makes Perfect: Advance English Grammar for ESL Learners, Practice Makes Perfect English Verb Tenses Up Close, The McGraw-Hill Handbook of English Grammar and Usage, and The Big Book of English Verbs . See less