a practical english grammar exercises free download

... negative addition to an affirmative remark: She thanked me. (he) She thanked me but he didn't. Make an affirmative addition to a negative remark: She can't eat oysters. (I) She can't ... PEG chapter I 1 Articles: a/ an 2 Articles: the 3 Articles: a/ an, the 4 Articles and possessive adjectives 5 a/ an and one Auxiliary verbs PEG chapters 10-16 6 Auxiliary verbs 7 Auxiliaries ... isn't necessary for you to drive me to the station. I can get a taxi. 21 Our plane was delayed so we had lunch at the airport. But it wasn't necessary to pay 35 1 We must have a large...