1. Does your child understand simple commands and instructions without the use of gestures? By the age of two, children can comprehend a large number of words and simple commands. Remember - every child's comprehension of spoken language far exceeds his own expression (meaningful speech). Speech has no meaning without language.
2. Does your child respond to other environmental sounds?
3. If the answer to the first two questions is YES, then do you feel her problem is restricted to formulating words and sentences?
4. Is she using a lot of gestures to express herself?
5. Did your child learn to sit, stand and walk at the appropriate age? This may give you a clue as to whether the delay in speaking is due to an overall delay or restricted to speech.
6. Most importantly, are you and your spouse spending enough time interacting with your child?
7. Is your child being exposed to heated arguments in the family most of the time?
8. Is someone or the other in the family trying to speak for the child frequently?

Once you have observed the above points, perhaps you can figure out whether you need to consult a Speech-Language Pathologist. Before you do that, you could try out these tactics.
 

Keep Talking

Speak to your child in simple sentences about whatever is happening around her. If you are going for a drive, keep pointing out various things to her. Say things like "Isn't it big?" and "Now we've stopped because the light has turned red." It is always a good practice to take the child for a visit to places like the zoo, circus, beach, garden. Places that are highly stimulating for language. It doesn't matter if she's not yet reached the age where she will be able to grasp all you say. What matters is that in this manner you are slowly increasing her familiarity with the language.
 

Concrete Words

Begin with short, easy to say words that are quite concrete. Nouns and then verbs are usually the preferred words to begin with as these are concrete, the child can easily see them, feel them and hear them. You may then proceed to the more abstract words.
 

Go Slow

When speaking to your child, speak at a slow rate using pauses at appropriate junctures.
 

Consistency

There should be consistency in the formulation of your sentences for the same concepts or descriptions, from day to day. 
Example: Wish your child good morning every day, and good night every night before she turns in. This will help her form associations.
 

Do not Speak for the Child

Discourage others from speaking for the child when she is trying to get the right word and articulate it. Give her time, say a few seconds and if she dos not succeed, only then say the word for her.
 

Good Listener

Pay close attention to what the child is trying to communicate and verbalise it for her.

Do not correct the child's efforts to speak Just imitate correctly what the child said incorrectly. This means you are just making her listen to the right words/sentences (as the case may be) for the concept she is trying to convey
 

Read out Loud

Read to your child often, from a storybook. In fact, make it a point to read out at least one story daily. Use well illustrated storybooks to tell her simple stories.
 

Nursery Rhymes

Teach her nursery rhymes. Keep reciting them often and keep the same tape keep playing in the background whenever possible, so she gets familiar with a few rhymes. Expose her to actions corresponding with the rhymes. This will make learning them all the more fun. Encourage her to imitate your actions while you say the rhymes.
 

One Language

If you feel your child still has difficulty grasping the language, speak to her in one language only, for the time being. Make sure your other family members do the same.
 

Plan the Activities

Plan activities that are appropriate, creative, flexible, and enjoyable. Remember - "Play" rather than " work " with your child.
 

Ensure Good Parenting