How infants understand things
And respond to our words
Is amazing!
Babies repeat the word they hear
In their mind frequently
And can remember some of them later!
Even six-months-old can utter words
And make simple sentences
In their mind
And understand them as well!
That’s why
Babies usually utter the first meaningful word
With their mouth when they are around one-year-old
And start saying many meaningful things
Within a very short time!
Asif Andalib
http://www.poemhunter.com/poem/how-infants-learn-to-talk/