2-3 years old: I know the names of body parts, can use "I", can combine verbs and nouns, has a vocabulary of 500, can speak short sentences, can understand big and small, and likes to listen to a story repeatedly.
3-4 years old: I can tell stories, speak sentences of four or five words or more, have a large vocabulary, know my surname, what some streets are called, and know a few children's songs.
If the child is suspected of language retardation, language rehabilitation training must be carried out in time. Generally speaking, about 3 years old is the best training golden period. The golden age is before the age of five.
There is no specific medicine for treating language retardation, and the only effective one is targeted functional training.
At the same time, it is necessary to distinguish whether the diagnosis is simple language retardation or autism and mental retardation.
Generally, when you go to a hospital, you should not hang up pediatrics, but hang up children's health care. If there is a developmental behavioral specialist, it is necessary to hang a specialist for diagnosis and rehabilitation training.