A first task for the visitor abroad is to discover which forms are used to fulfill this function. If we compare form and function across cultures, it soon becomes clear that one form may be used to 点此填空 different things in another culture than in one’s own. For example, in Turkish “no” is 点此填空 by moving one’s head backwards while rolling one’s eyes upwards. However, to an American this movement is close to the signal used for saying “yes”. Further, in still other cultures, head shaking may have nothing to do with 点此填空 or negation. In parts of India, rolling the head slowly from side to side means something like “Yes, go on. I’m listening.” Thus, as one goes from culture to culture, form and function may not 点此填空 . If a foreigner wants to communicate appropriately, he must develop the competence of sending and receiving “no” messages.