ADVERVIOS

 Se utilizan para referirnos al tiempo.

ALREADY (YA) Afirmativa

I have already done my homework

EVER (NUNCA) Afirmación y pregunta

Have you ever go to Amazonas?

Have you ever seen a seal?

NEVER (NUNCA) Negación

I have never gone to Amazonas

YET (TODAVÍA –AÚN)  Pregunta y negación

Have you done your homework yet?

Haven’t you done your homework yet?