| Unit 1 I Haven’t Smoked Since 1 996.present perfect Unit 2 Have You Ever Taught Art？present perffct and simple past Unit 3 I Was Reading The Paper.past continuous Unit 4 I've Been Waiting For Twenty Minutes.present perfect continuous Unit 5 I Need To Be In Seattle.gerunds and infinitives Unit 6 Iudy's The Oldest.S1tperlatives Unit 7 I'll Have Another，Please.another／the other／others／the other ／most of…／some of Unit 8 J Took A Class To Prepare.purpose：to／for Uint 9 I Bought It When I Was In Africa.past time clauses Uint 10 Wht have you been lip to? review Uint 11 Is everything all right? indefinite compounds Uint 12 As soort as i agraduate... present and future time clauses Uint 13 Bowling is boring. participles as adjectives Uint 14 When i have too many things to do... the real conditional Uint 15 You Aren't Hungry,Are You ? Tag questions Uint 16 Do You Know How I Can Reach Him? embeded questions Uint 17 Do You Know How I Can Reach Him? embeded questions Uint 18 Use Your Time More Efficiently. comparatives of adverbs Uint 19 I Thind I Know The Man Who...relative clauses Uint 20 Once Again. review Appendix irregular verb index |
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