DELTA Natural English is a series of language practice books for students who aspire to use natural, fluent English. Collocations are the key to fluent English. Learning words on their own may enable students to communicate, but to sound natural, students must learn which words typically go together. Using Collocations helps students to improve the way they use the words they already know. Common English collocations are first presented in simple exercises. Students go on to understand and use the collocations with confidence in a wide variety of contexts. Using Collocations puts an emphasis on learning to use collocations appropriately. Collocations are always presented in typical contexts and information on formality or informality is included. Exercises include working on a range of text types from tweets to e-mails, postcards to letters, and adverts to newspaper articles. Examples of conversational English are also included with texts recorded and available for free on DELTA Augmented. These allow students to notice and practise aspects of stress and intonation.