Step 1

Comprender means to understand
     Comprender is a regular -er verb.
   To say understood, use the preterite.

Yo no comprendí lo que el abogado dijo.
      I didn't understand what the lawyer said.

¿Comprendiste lo que el abogado dijo?
      Did you understand what the lawyer said?

Nadie me comprendió.
      Nobody understood me.

Nosotros no comprendimos lo que el abogado dijo.
      We didn't understand what the lawyer said.

     Vosotros comprendisteis
      You all understood

Los señores no comprendieron lo que el
       abogado dijo.
     The gentlemen did not understand what the
       lawyer said.