The Innate Relationship Between Language and Thought

we are different from other animals.Foronereason,we could think and solve complex problems.For another reason,we can speak languages.Amongall the theories,weare going to discuss two main stream the oriesinth is field：one is the weak version of the Sapir-WhorfHypo thesis;another is Vygotsky＇s theory.The ＂weak＂ version holds ＂language in fluences thought＂.According to Vygot sky＇s theory,thought and language evolves along two independent paths leading to the junctureat which thoughts become verbal and speechrational.By following the demonstration tests and findings,the paper shows both verifications and flaws in the main stream theories.