Elementary Discussion on English Ambiguity

English vocabulary is very rich and there are many meanings in it.English grammar structure is also flexible and complex.And so ambiguity phenomenon can easily appear in practical application,especially in mutual translation from English to Chinese.This article will discuss the reasons and the characteristics on some English ambiguity phenomenon,expound the importance and significance of the research of ambiguity phenomenon,and give examples so as to analyze and classify the English sound ambiguity,meaning ambiguity and grammar structure ambiguity.