According to relevant research, children have preliminary intelligence activities in their minds when they are one or two years old. Before learning language, "primitive communication" existed in children. When they express their ideas or needs, they often use a certain voice or posture. This kind of intelligent activity or "primitive communication" to express their own needs shows that children have thought before learning language, which is a relatively simple thought and image thinking, and has a preliminary expression. Language and thinking do not produce and develop at the same time, but thinking comes first and language comes later, that is, thinking comes first and language comes later. Babies have nothing when they are born, but they have their own logic and thinking in their brain. Under the influence of the acquired environment and in the process of imitating adults' speech, they gradually understand and master the language. Generally speaking, children around one year old will make such sounds as "Mama" and "Baba", but they can't be regarded as a language; by the age of two or three, with the increase of vocabulary, they can easily speak simple language; usually after four or five years old, they mostly go to kindergarten, at this time, children are in the range of perception or thinking In terms of ability, they will expand and strengthen day by day, and their speech activities will continue to increase.<br>
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