高中英语复习北师大版《Unit 16 Stories Lesson 1 Stories from History》学案 （无答案）

Unit 16 Stories Lesson 1 Stories from History Grammar Summary 过去完成时 （Past Perfect Tense） 班级：____________ 组别：___________ 姓名：_____________ 语法结构：It shows an event or situation in the past which happened earlier before other past events. 语法功能：过去完成时表示在过去的事情之前发生的事件或存在的状态。 活动目的：用于该语法结构的新授 Learning goals: By the end of this class, students will be able to Figure out the definition of the past perfect tense. Master the structure, affirmative sentence pattern“had +V-Past Participle.”；Negative sentence pattern“had not +V-Past Participle.”. Master and apply the usage of the past perfect tense in the proper context. Step I. 自主预习 Read the sentences and find out which action happened before the other. Before the eruption occurred, it had been a booming Roman city... Pliny wrote about an extremely terrible volcanic eruption that he had witnessed as a young man. However, more than 1,600 years later, some scientists found the lost towns that had bee