2doWORLD

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There are 120 units in the book. Each one looks at a particular area of grammar. Some sections within each unit focus on the use of a grammatical pattern, such as will be + -ing (as in will be travelling). Others explore grammatical contrasts, such as whether to use would or used to to report past events, or when we use because or because of. The 120 units are grouped under a number of headings such as Tenses and Modals. You can find details of this in the Contents on pp. Each unit consists of two pages. On the left-hand page are explanations and examples; on the right are practice exercises. The letters next to each exercise show you which sections of the lefthand page you need to understand to do that exercise. You can check your answers in the Key on page 289. The Key also comments on some of the answers. Four Appendices tell you about passive verb form, quotation, irregular verbs and Typical Errors (see below). To help you find the information you need there is an Index at the back of the book. Although terms to describe grammar have been kept to a minimum some have been included, and you can find explanations of these terms in the Glossary on page 265.
On each left-hand page you will find a number of • symbols. These are included to show the kinds of mistakes that students often make concerning the grammar point being explained. These Typical Errors are given in Appendix 4 on page 246, together with a correction of the error, and an explanation where it is helpful.
The symbol Й?я is used to show you when it might be useful to consult a dictionary. On the explanation pages it is placed next to lists of words that follow a particular grammatical pattern, and on the exercise pages it is used, for example, to show where it necessary to understand what particular words mean in order to do the exercise. Good English-English dictionaries include the Cambridge International Dictionary of English, the Longman Dictionary of Contemporary English, the Oxford Advanced Learner's Dictionary, and the Collins Cobuild English Language Dictionary.