When learners are involved in real communication, their natural strategies for language acquisition will be used, and this will allow them to learn to use the language.
Practising question forms by asking learners to find out personal information about their colleagues is an example of the communicative approach, as it involves meaningful communication.
In the classroom
Classroom activities guided by the communicative approach are characterised by trying to produce meaningful and real communication, at all levels. As a result there may be more emphasis on skills than systems, lessons are more learner-centred, and there may be use of authentic materials.