This book, English Dictionaries and Learning English, is intended for those people whose native language is Chinese and who are interested in improving their English, especially those who are unversity students majoring in English or those whose work is related to English. Readers will be introduced to a wide varieties of English dictionaries, both general-purpose dictionaries and specialized dictionaries, and plenty of examples from these various dictionaries will be cited in discussion so that while readers are learning about English dictionaries , they are improving their English, too. Attention is drawn to the microstructure of general-purpose dictionaries and what is to learn when one is learning an unknown or new word. Tips are also offered on how to memorize words or expand one's vocabulary. There are also chapters on how to choose the dictionaries that can help meet the needs of readers and how to make the best use of English-Chinese dictionaries and English-English dictionaries. Finally, two appendices are given to discuss what essential features an ideal print dictionary or dictionary app on mobile devices should include.