Foreign teachers'sharing of infants and young children is the key period of human language development, which has been proved by a large number of psychological research and pre-school education practice. Everyone knows the story of wolf boy. She returned to human society at the age of 7, and since then she began to learn to speak. After several years of training, she finally learned only a few simple words, and her speech ability was far lower than that of her peers. An American girl named Gini, who was confined by her parents in a small room, had no chance to talk to people around her. She was rescued in 13 years and 7 months, when she had no language skills at all, and her psychological maturity was equivalent to that of a 1-year-old child. Later, she was specially trained and trained by her. Her language is developing very slowly. After four years, her words are still fragmented, similar to the "telegram sentences" spoken by children around two years old. These two are very typical examples of early language deprivation. The experience of these 2 poor girls strongly indicates that there is a critical period in language development.
The development of children's pronunciation
Early childhood is the most significant period of speech plasticity. Psychological studies have found that children over the age of 4 are generally able to master all the speech. From the age of 3-6, there are fewer and fewer children with inaccurate pronunciation. Among them, the age of 3-4 is the fastest developing period of pronunciation and the key period for correcting children's pronunciation. Before the age of 3-4, children's pronunciation development shows an expanding trend, that is, from children never have clear syllable pronunciation, they can gradually learn more and more pronunciation. After the age of 3-4, the tendency of children to learn phonetics began to shrink, that is, after mastering the phonetics of their mother tongue, the phonetics began to be stereotyped, and it would be difficult for them to learn the phonetics of other languages. Before the age of 3-4, children are quite easy to learn the pronunciation of the languages of different nationalities in the world; but after that, learning a second language is more difficult, and the older they are, the more vulnerable they are to the interference of the first language in learning a second language. So the sooner we learn English or the other second, the sooner we learn it.
Two development of children's vocabulary
An important task of children's language development is to learn and master the basic vocabulary of English or other languages, that is, common vocabulary in society. The development of children's vocabulary is mainly manifested in three aspects: the increase of vocabulary, the enlargement of vocabulary categories and the deepening of understanding of word meanings.
Three development of children's sentences and paragraphs
(1) development of sentences
Children's sentences usually contain 4-6 words, up to 10 words. 4-5 years old is a period of obvious development of sentence length. Children before 3 years old are simple sentences without modification. After 3 years old, the number of sentences with modification increases rapidly. 91.3% of the 6 year old sentences have modifiers.
(two) development of paragraph
Before the age of 3, children's language is mainly situational language, that is, only by combining specific situations and using non-verbal means such as expressions or gestures, can they understand each other's meaning. Children of 3-4 years old still have obvious situational language. What they say is often incomplete and incoherent. With the increase of age, the contextual language of children's language is becoming less and less, and the coherence language is gradually increasing, which can express the complete meaning and tell the complete story.
无论是语音 词汇 还是听说，幼儿的各方面语言能力都处于迅速发展的时期。在此阶段，如果给以适宜的丰富刺激，在加上指导，儿童的语言就能取得长足的进步，出现飞跃。因此幼儿期是语言教育的关键时期，幼儿语言教育质量可能对幼儿终身的语言能力产生影响。
Whether it is phonetic vocabulary or listening and speaking, all aspects of children's language ability are in a period of rapid development. At this stage, if given appropriate stimulation and guidance, children's language can make great progress and leap forward. Therefore, early childhood is the key period of language education, and the quality of language education in early childhood may have an impact on children's lifelong language ability.