单语
2.Earlier and recent psychological studies show that bilingual children are more resourceful and complex intellectually when compared with their monolingual peers. 
3.People from a single-language background often lament that our bilingual policy has produced a younger generation of Singaporeans who understand both the Chinese and English language, but can hardly be said to be proficient in them. They have failed to grasp the essence of either and end up neither here nor there.
