Ebook 4000 essential English words - Book 1

The 600 words in each book of this series along with the additional target words presented in the appendices included in the first three books of the series are the most useful words in English. 4000 Essential English Words Book 1 by Paul Nation is a wonderful and well-organized vocabulary book. Each unit has 20 target words with multiple learning exercises that learners can use to practice the vocabulary. Please refer to the documentation for more details.