Communication is so much more than just talking; children need to develop good early communication skills as these form the foundations of language.
First, children need a language-rich environment where they can listen, watch and learn to communicate. They also need reasons to communicate and opportunities to do this. Children need to learn how to use their language socially. The need to be able to use and understand non-verbal communication (for example, using eye contact and turn-taking), develop shared attention (for example sharing an activity with an adult) and develop their play skills.
So, before children learn to use words, children need responsive adults to provide them with positive experiences of communication. Children need opportunities to communicate with familiar adults, adults to show they are interested in what they are saying and to respond to all their communication attempts. Regular, good quality interaction opportunities will help them to learn about how communication works and develop their skills.