What the teacher can do to help to solve some of the problems 1. Use group work This increases the sheer amount of learner talk going on in a limited period of time and also lowers the inhibitions of learners who are unwilling to speak in front of the full class. It is true that group work means the teacher cannot supervise all learner speech, so that not all utterances will be correct, and learners may occasionally slip into their native language; nevertheless, even taking into consideration occasional mistakes and mother-tongue use, the amount of time remaining for positive, useful oral practice is still likely to be far more than in the full-class set-up.
2. Base the activity on easy language In general, the level of language needed for a discussion should be lower than that used in intensive language-learning activities in the same class: it should be easily recalled and produced by the participants, so that they can speak fluently with the minimum of hesitation. It is a good idea to teach or review essential vocabulary before the activity starts.
3. Make a careful choice of topic and task to stimulate interest On the whole, the clearer the purpose of the discussion the more motivated participants will be.
4. Give some instruction or training in discussion skills If the task is based on group discussion then include instructions about participation when introducing it. For example, tell learners to make sure that everyone in the group contributes to the discussion; appoint a chairperson to each group who will regulate participation.
5. Keep students speaking the target language You might appoint one of the group as monitor, whose job it is to remind participants to use the target language, and perhaps report later to the teacher how well the group managed to keep to it. Even if there is no actual penalty attached, the very awareness that someone is monitoring such lapses helps participants to be more careful.
However, when all is said and done, the best way to keep students speaking the target language is simply to be there yourself as much as possible, reminding them and modelling the language use yourself: there is no substitute for nagging!