Languages may vary in the type of writing system used, in the degree of correspondence between symbols and sounds. It is generally recognized that writing systems fall into two broad categories: logographic and alphabetic. Alphabetic systems are those in which each symbol (grapheme) ideally corresponds to one sound unit (phoneme) such as Spanish and English. In the Chinese writing system, however, the sound (phoneme) corresponds to the whole character rather than to segments, and individual component strokes of the written characters do not themselves represent aspects of the phonological pattern. It seems necessary to reconsider the assumption that students, especially second language learners such as Chinese students, can figure out the relationships between letters and sounds in English by themselves, i.e., that they can recode words without any training. This paper mainly discusses whether or not instruction of English grapheme-phoneme correspondence, i.e., the link between letters and sounds, will help Chinese students in learning English vocabulary.