To understand
Entender
To think
Pensar
To think about/to ponder
Pensar en
To think of
Pensar de
To plan to do something
Pensar + infinitivo
To begin
Empezar
To begin to do something
Empezar + infinitivo
To lose
Perder
To prefer
Preferir
To want/to love
Querer
To lie/to fib
Mentir
To sleep
Dormir
To be able to/to can
Poder
To cost
Costar
To find/to meet
Encontrar
To remember
Recordar
To try/to taste
Probar
To fly
Volar
To ask for/to order/to request
Pedir
To serve
Servir
To repeat
Repetir
To say/to tell
Decir
To follow/to continue
Seguir
To play (a game or with toys)
Jugar