Speak as much English as they can be just including a child learning his first words. My daughter had already had kinder garden experience in China so she was quite delighted to keep growing. http://www.odrportal.hu/en/web/thanhphuong/home/-/blogs/10-trung-tam-hoc-tieng-anh-giao-tiep-co-ban-tai-%C4%91a-nang-chat-luong