This paper will focus on the effective review of English in the third grade of primary school. In the first part, the author introduces the importance of improving the effective review of English in the third grade of primary school. Analyzing from the aspects of theories, teachers have to get a good knowledge of language theories and analyze it well to achieve the teaching goal. So the author brings some theories about second language acquisition, such as the input hypothesis, the monitor hypothesis, the effective filter hypothesis and the natural order hypothesis. After analyzing the weaknesses deeply, the author lists some methodologies for reviewing language and the motivation for primary students' review of English. In the third part, it shows the cause of the present problems in the method of present teaching and reviewing lessons. In the next part, it gives some solutions for these problems.