PRACTICAL ENGLISH USAGE 3th edition
About this book
The purpose of this bookEnglish, like all languages, is full of problems for the foreign learner. Some ofthese points are easy to explain - for instance, the formation of questions, thedifference between since and for, the meaning of after all. Other problems aremore tricky, and cause difficulty even for advanced students and teachers. Howexactly is the present perfect used? When do we use past tenses to be polite?What are the differences between at, on and in with expressions of place? We cansay a chair leg - why not *a cat leg?When can we use the expression do so?Whenis the used with superlatives? Is unless the same as if not? What are thedifferences between come and go, between each and every, between big, largeand great, between fairly, quite, rather and pretty? Is it correct to say There's threemore bottles in the fridge? How do you actually say 3 x 4 = 12?And so on, andso on.