The present study investigates how Chinese learners of English express definiteness in anaphoric contexts from the perspective of conceptual transfer.In the research,all the subjects were required to select the best choice for expressing definiteness in three types of anaphoric contexts.The result shows that although Chinese learners as a whole are capable of distinguishing between the or that,both intermediate and high-proficiency learners are affected by conceptual transfer since they are prone to conceptualize "na" in Mandarin as a combination of existential uniqueness and demonstrative uniqueness in English.