17 What is a DO?DO pronounsme, te, lo, la, nos, os, los, las
18 usage before a conjugated verb: attached to infinitive: Lo voy a alquilar (el DVD).attached to infinitive:Voy a alquilarlo.
19 w/ present progressive also have 2 options. before estar (conjugated verb)La estamos leyendo. (la revista)attached to present participleEstamos leyéndola.
20 accentsWhen attaching a DO pronoun to an participle, need to add an accent to present participle to maintain original pronunciation of present participle.-ar, add to “a” in -ando-er, -ir add to “e” in -iendo