What does "to be" mean in English for Spanish?

In English for Spanish, "to be" means:

estar, ser

Listen to "to be": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a phrase that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 3, Level 2, Scene 1
• English for Spanish 3, Level 1, Scene 5
• English for Spanish 3, Level 2, Scene 12
• English for Spanish 3, Level 2, Scene 3
• English for Spanish 3, Level 2, Scene 2