The student should start thinking in the target language as soon as possible. Translation confuses and wastes time.
The only way in which the student will learn to speak a language is by speaking it, just as one learns to play golf by hitting a golf ball with a golf club.
It is a fact that a language is learned by using and hearing it , therefore, the student should be less reliant on his eyes during the lessons.
Language is not a collection of words, but a system of word combinations.
The teacher should build on the student's knowledge and fill in gaps as soon as possible.
In order to drive a car it is not necessary to know how the engine works. The student should be able to induce a rule from examples.
In order for the student to be constructive and creative in his use of the target language, he must experiment. It is impossible to memorize a number of sentences and phrases which he thinks he will need one day.
The goal of the inlingua method is to make language learning as efficient and pleasant as possible. The method is flexible to give the teacher the possibility to adapt his approach to the individual requirements of the student. Factors such as linguistical talent, motivation, openness and cultural particularities have to be considered.
A structural approach to language learning is one which places the main emphasis on learning the structures or grammatical items of a language. The functional approach emphasizes learning how to express oneself in situations which occur in everyday life. The most efficient teaching method is the combination of both approaches. The inlingua method teaches structure on the basis of functional situations.