2。2 Bilingual education 

2。2。1 The definition of bilingual education 

Bilingual education refers to taking a class in two different languages in a country or region。 One of the two languages is the native language of the students, and the other is the common language (second language) or the target language (foreign language) of the students in the area。 Bilingual education is carried out through the bilingual teaching。 The explanation of bilingual education is: “using a second or foreign language in school for the teaching of content subject” according to Longman Dictionary of Applied Linguistics。 Obviously, sometimes foreign language teaching also refers to the foreign language education。 “Bilingual education” is a translation of bilingual teaching, which refers to the teaching of various subjects in the school through using second languages or foreign languages。 In other words, the students' foreign language or second language can replace or verge on the level of mother tongue through teaching or several stages of training。来~自,优^尔-论;文*网www.youerw.com +QQ752018766-

2。3 The earlier studies on bilingual teaching

“Bilingual teaching started earlier in foreign countries, and the overall level is relatively high。 The most representative and successful bilingual teaching in foreign countries is Canada's immersion bilingual teaching。 Bilingual teaching in our country started late, and the term of the bilingual teaching was the earliest appearance and popular in the early twentieth Century。 According to the research on neuropsychology, children have high potential。 On the one hand, children at 0-6 years old, is a critical period in language development。 If children can be educated with language and have abundant stimulation that benefits to them, they will develop better。 On the other hand, if we do not make good use of critical language period, even giving a lot of stimulation is also difficult to make language ability full play。 It is indicated by a physiological mechanism research that the best time to exposed to bilingual teaching is 4 to 10 years old”。

     These professional studies and the theories from them can be conducive to my essay, and I apply some into my essay。