The ability to imitate sounds is an important first step toward being able to talk. At this age, your toddler is continuing to experiment with language in new ways. Encourage your little one to play with the sounds of language in fun ways.
Step 1: Direct your toddler's attention to your reflection in a mirror.
Step 2: Open your mouth really wide and say "aaahhh." See if your toddler will copy you.
Step 3: Stick out your tongue and say "la la la la la la la." See if your toddler will copy you.
Step 4: Change the expression on your face as you make each sound. Add new sounds and copy the expressions and sounds your child makes.
This game will probably get you and your little one giggling...have fun!