ellipsis is a term used in grammar to refer to a sentence where for reasons of economy , emphasis or style, a part of the structure is omitted and which can be recovered from the scrutiny of the context . ellipsis is used to avoid redundancy and to achieve a cohesive style in both forms of language : spoken and written (Crystal , 1980 : 159 ) . Biber (2002 :230) defines ellipsis as the omission of elements which are recoverable from the linguistic context or situation . It takes place when we leave out items which we would normally expect to use in a sentence if we follow the grammatical rules(ibid.) .Ellipsis is the economy of the language, enabling us to avoid the unnecessary repetition of words.