Unit 1 MAIN TEACHING POINTS 1 The present perfect progressive indicating a finished action 2 The past progressive indicating a circumstanc and the simple past indicating a past event 3 The past perfect progressive 4 The I was wondering if...pattem as a polite fom of request LISTENING COMPREHENSION Unit 2 MAIN TEACHING POINTS 1 the subject complement introduced by that 2 the subject complement introduced by a wh-word 3 the appositive 4 the subject introduced by what LISTENING COMPREHENSION Unit 3 MAIN TEACHING POINTS 1 involving the modal auxiliary have to 2 converted from the active sentence with a direct and an indirect object 3 involving the verb phrase bhrasal verb 4 formed by the They say It is said...patterns LISTENING COMPREHENSION Unit 4 MAIN TEACHING POINTS 1 would+perfect infinitive used to express "unfulfilled wish" 2 should/ought to+perfect infinitive used to express "unfulfilled obligation" 3 needn't+perfect infinitive expressing "unnecessary past actions" 4 may/might+perfect infinitive used to express"speculations about past actions" 5 can/could not+perfect infinitive used to express"negative deduction about past actions" 6 musl+perfect infinitive used to express"affirnative deduction about past actions" LISTENING COMPREHENSION Unit 5 Unit 6 Unit 7 Unit 8 Unit 9 Unit 10 Unit 11 Unit 12 Unit 13 Unit 14 Unit 15 Unit 16 Unit 17 Unit 18 A Sample Test Answers and Tapescripts for the Sample Test Key to the Workbook