Article Usage Free ESL book !

Article Usage Author: John Kohl, Susan Katz Format: PDF The articles "a," "an," and "the" are difficult for many non-native speakers of English to learn to use properly. Some of the rules that govern article usage are very subtle; only years of experience with the language will enable you to understand and apply these rules. This handout will help you eliminate many errors in article usage from your writing.

Click here to download the book: 
http://www.rpi.edu/web/writingcenter/wc_web/handouts/Articles_ESL.pdf