Instead, the children should learn English in school. However, they're told to practice English with their children and their children are getting mistaken input. Educators don't agree when to introduce the second language. Some recommend starting at birth. Others say that can put a child at a disadvantage with both languages for a short time, and recommend waiting until two and half or three years old to introduce the second language.
Children acquire language in stages.
Coos and babbles, the language of babies, comes first. Once the two-word stage is reached, the child's language ability explodes. The child puts together more than two words but only uses nouns, verbs, and adjectives, not speaking in complete sentences. Da-Lai Wu, whose teenage children speak Chinese and English, spoke solely Chinese with his children when they were younger. His wife spoke only English.