Toddlers often have trouble with pronunciation and difficulties putting sentences together.
A child between the ages of 18 months and 3 years will generally mispronounce many words. It's perfectly normal to have to play a guessing game to figure out what your child is saying, and at times you may have absolutely no clue what she's getting at. All of these mispronunciations are common even up until age 6. If the problem is not pronunciation but rather that your child isn't talking or is talking very little, you should act a little more quickly. Uses a word once and then doesn't use it again frequently.