The aim of this study is to contrast the structure of declarative sentences of Fur and English language with a view to identify the areas of similarities and differences. The study shows that English and Fur languages are from different language families. English belongs to Indio-European language family whereas, Fur belongs to Nilo- Saharan language family. The researchers have adopted contrastive analysis methodology to conduct this study. The data will be collected from grammar books of English as well as the text books of Fur language. Using the descriptive research method and tree diagrams (Phrase Markers) and tables to analyze the data. They contrast some examples of declarative sentences between Fur and English Language. The results reveal that Fur and English languages, are distinct from one another but at the same time they are alike in terms of sentential elements. The structure of declarative sentence in English language consists of subject (S), verb (V), object (O) SVO this is characteristic of English language sentence structure whereas, the structure of Fur language sentence is SOV that is to say the order of sentential elements of Fur language is different from the English one. The two languages have two kinds of questions (Wh-question and Yes/No question) but with different words arrangement. In order to overcome the above problems, this study recommends that the teachers should concentrate on the areas of differences in both languages. The curriculum designers and textbook writers in Sudan should clearly reflect, in their work the differences that exist between the sentence structures of English and Nilo- Saharan Languages which spoken by a large number of Sudanese