Yo = I Estoy/Soy = I am/I'm Ya = now/already Me = direct object(págame ahora) pay me now Me = indirect object(me los enviaron ayer) they mailed them to me yesterday

is complicated explain the Pronouns ME, . this is pronouns directs and indirects, please see this link, may be can help you. http://www2.ku.edu/~spanish/acceso/gramatica/unidad5/pronombres.shtml estoy is a verb to be, yo estoy presente = I am present, end yo = I ya is another complicated word, usually is used like (now) or (alredy), this other link can help you http://www.thespanishforum.com/blog/pilar/16/07/2012/%C2%BFya-%C2%BFqu%C3%A9-significa-ya regards

ya suele ser un advervio =already aunque en lenguaje hablado tambien se usa como confirmación de que se entiende lo que el otro está hablando; se dice solo "ya" (ya entiendo). como a equivalente a "I kown·"

http://www.wordreference.com/es/en/translation.asp?spen=ya Ya=already "¿Comiste ya?" me=indirect and direct pronoun used in the following way. "¿Me compras un bocadillo?" "Dámelo", etc. yo=I. "yo quiero un bistec." estoy=first person singular conjugation of verb "estar". "(yo) estoy cansado."