About 2 years old, mainly in pronunciation training.

Look at this:

(1) use various opportunities to expand children's vocabulary. For example, take your child to the park and tell him the names of the flowers and trees he sees. Teach children to express themselves in complete sentences, and often show them pictures, tell them short stories and teach them to say ballads. And often use common pronouns I, you, he (it), we, you, them, ourselves and us in discourse, so that children can gradually understand the referential relationship of each pronoun.

② Develop language ability. Encourage children to tell some things by themselves, such as

What did you do today? What did you see in the park, and so on. Let him retell the story and tell what is depicted in the picture. Teach children to remember their parents' names, home addresses, parents' occupations, units, their ages, etc.

Reference:

/BBS/thread- 1977- 1- 1 . html