... section 1.1 The interference of the mother tongue in foreign languages 1.1.1 Definition of the mother tongue and foreign languages A first language (also native language, mother tongue, arterial ... this thesis, the interference of the mother tongue in pronunciation is dealt with, but the study cannot cover all the problems related to pronunciation, this study only focuses on the mother tongue ... nasal In the articulation of /R/, the soft palate is lowered and all the air passes out through the nose The mouth is blocked by the back of the tongue pressed against the soft palate The sound...