1000 Basic English Words is a four-book series designed to introduce basic English words to EFL learners and to reinforce the students learning through the systematic repetition of each of these words. The 240 words presented in each level, combined with the additional target words featured in the appendices included in each book, provide learners with over 1,000 practical, high-frequency English words. The words introduced in the series are commonly used in both spoken and written English. While the series