Questão de Língua Inglesa

“Grammar is a complex matter and many people fear it” (JAMES, G. A complete guide to learning a language: how to learn a language with the least amount of difficulty and the most amount of fun. How To Books Ltd, 2003). Written and spoken language differ from one another in various ways. In conversations, for example, it is quite common to pause, to hesitate, to insert “fillers'' (you know; huh) etc. What do you call it when we leave words out without interfering with the meaning of the sentence?