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Grammar & Usage for Better Writing

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Auxiliaries here are used both alone and as part of various tenses of ordinary verbs. Read the following (a) in the negative (b) in the interrogative. These sentences, except for nos. I and 13, could also be used for question tag exercises (see Exercise 13). PEG 106-7, 123, 126 (see also Exercise 17) Some auxiliaries when used in certain ways make their negative and interrogative according to the rule for ordinary verbs, i.e. with do. Sometimes either form is possible.

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