The objective world contains infinite items,while the vocabulary of our human language is always limited,so fuzziness would inevitably occur when we use the language to reflect the world.Fuzzy language refers to the linguistic units or patterns that are indeterminate or with referentialindef initeness.
Affective variables and learning strategies are two important factors that influence language proficiency. In the investigation conducted by the author,there is no sure causal connection being found among the three factors. Further,affective variables seems prevail over learning strategies of the influence on language proficiency and it is the primary element in language study process.