The document discusses the differences between "used to" and "be used to". It provides examples of each:
- "Used to" describes a repeated action in the past that no longer happens, such as "I used to drink green tea".
- "Be used to" means to be accustomed or familiar with something, such as "I am used to drinking green tea".
It clarifies that "used to" takes a verb while "be used to" takes a noun or gerund. The document provides additional examples to illustrate the differences between the two phrases.