Completar Frases Fill in the Blanks: Verb to BeVersión en línea Test your knowledge of the conjugation and usage of the verb to be in English with this fun and educational game. por Dalia Juárez 1 essential communication conjugation person tense verb to be state of being past tense progressive aspect number passive voice English language present tense auxiliary verb versatile verb important verbs The is one of the most in the . It is used to indicate a or existence . The of the verb to be varies depending on the , , and . In the , the conjugation for the first person singular is 'am' , for the second person singular and plural is 'are' , and for the third person singular and plural is 'is' and 'are' , respectively . In the , the conjugation for the first and third person singular and plural is 'was' and 'were' , respectively . The verb to be is also used as an in the formation of the and in the . It is a that is in many aspects of English .