Does Shi-Shi understand what Mama says?

She-Shi seems to understand what mama says thesedays. This morning, mama was looking for the Mother Goose CD, wandering around the livingroom and asked Shi-Shi where it was. Then she brought the CD and gave it to mama!! The CD was in a trank of her little car. (she put the CD into the trank earlier, and mama wouldn't know that.) Shi-Shi is now 22-month-old, though, she is not ready to talk yet.  (she speak her own language that nobody would understand.)  It would be fussy by the time she speaks ...well in a good way...