Libro de gramatica de ingles,

[Ayudante De Santa]

[berserkcol]

Este es un libro q he encontrado util para perfeccionar el idioma, es facil de seguir.

http://s1.gigaimg.com/avaxhome/e3/60/001b60e3_medium.jpeg

Do you want to improve your English grammar? This book guides you to the most important points and difficulties of English grammar, using: short, clear explanations; lots of practice and review pages and cartoons to help you understand -- and make you laugh!

http://freakshare.com/files/xbvwq2qy/Really-Useful-English-Grammar.pdf.html