Abstract:
It is not possible to learn a foreign language without making errors , that is what experience dictated us . Types , sources , causes of errors may differ according to contexts but the impact of the mother tongue can not be denied in almost all cases . The aim of this paper is to discuss interlingual errors of Sudanese learners in the perception and usage of two French modes ; subjunctif and conditional . The paper gives a description of the notions related to basic points ; the interlanguage , its conception and its position in the learning process , the mode and its definition , the subjunctif and the conditional and their usages . We present in this paper the errors revealed in copies of the mentioned learners . We propose an interpretation of such errors and give some suggestions for a better teaching / learning of these two modes .