Because learning two languages, with an emphasis on Chinese language over English language confuse cause because, even though the language is Chinese, but he has to learn that three Chinese, rather than English.
The two language classes Emphasizing that the Chinese language. The confusion caused by the language. Even if the Chinese will be the third language. It has to learn Chinese than English.
Because 2 language learning, emphasizing the Chinese more than English. Cause confusion of language. Because even though the Chinese is the language 3. But the Chinese more than English.