Unit 3 Food and Culture Discover Useful Structures 课件-2023-2024学年高中英语人教版（2019）选择性必修第二册

Book 5 Unit 3 Food and Culture Past perfect tense and Past perfect passive voice 年 级：高二 学 科：高中英语（人教版） Contents 01 Definition(定义) of the Past Perfect Tense 02 Identification(识别) of the Past Perfect Tense 03 Application(应用) of the Past Perfect Tense Past perfect tense and Past perfect passive voice 01 Definition of the Past Perfect Tense 2. They had finished their dinner by the time Sam joined them. 1. The chef had set up a farm-to-table restaurant before his new cookbook was published. Q:In these two sentences, which action happened first? Observe and analyze present past future earlier past had set up was published had finished joined Past perfect tense(过去完成时): had done 1. The chef had set up a farm-to-table restaurant before his new cookbook was published. 2. They had finished their dinner by the time Sam joined them. Observe and analyze A new farm-to-table restaurant ______________ by the chef before his new cookbook was published. had been set up Their dinner _______________ by the time Sam joined them. had been finished Past perfect passive voice(过去完成时的被动语态): had been done 1. We use the past perfect tense to express a past action(A) finished before another action(B) in the past. B A Definition of the Past Perfect Tense 2. We also use the past perfect tense to show that something(A) happened before a specific time(B) in the past. Formula of the Past Perfect Tense formation active voice passive voice affirmative sentence negative sentence general question wh-question had not/hadn't + done Had + S + done…? Wh- + had + S + done…? had+done had been done had not/hadn’t been done Had + S + been done…? Wh- + had + S + been done? ① First: The waiter gave my seat to someone else. Next: I came back. ② First: The thief ran away. Next: the police arrived. ③ First: The fire got out of control. Next: The firetruck drove up. The waiter had given my seat to someone else when I came back. The thief had run awa