English materials for
​Secondary school in México

First Grade

Unit 3
Introduction
A dictionary is a very important tool for anyone who is learning a new language.  How do you look up a word when you don't know how it's spelled? You can use a dictionary to:
  • look up the meaning of an English word.
  • check the spelling of a word.
  • find the English translation of a word in your language.
  • ​check the part of speech of a word.
  • find out how to pronounce a word.
  • find examples of the use of a word.