Unit 3 语法精讲（现在完成时三）-2023-2024学年八年级下册英语单元核心知识讲练（牛津译林版）

译林版八年级下册 Unit 3 语法精讲 现在完成时➌ 目 录 01. 回顾一般过去时 02. 现在完成时与一般过去时的区别 03. 随堂练习 04. 课堂小结 一般过去时 PART.01 一般过去时 一般过去时 定义：过去发生 结构：过去式 （七下已学，简单复习） eg: a) Maria lost his wallet yesterday afternoon. b) —Did you take a bus to school last term? —No, I went to school on foot. 一般过去时 常见时间状语： 1）yesterday，yesterday morning，... 2）last week，last summer holiday，... 3）two weeks ago，a year ago，... 4）when he was 5 years old，... 5）just now，in the past，in 2019，... 现在完成时与 一般过去时的区别 PART.02 现在完成时 区别一：一些易混淆的时间状语 1）just just now I’ve just returned from my aunt’s. I returned from my aunt’s just now. just刚刚：用于一般过去时； just now刚才：用于现在完成时 现在完成时 区别一：一些易混淆的时间状语 2）before用于句末 before引导时间状语从句 Kathy has never visited Summer Palace before. Kathy played tennis before she finished her homework. Kathy watched TV for hours before her mum came home. before引导从句：没有特定时态before：用于现在完成时 现在完成时 区别一：一些易混淆的时间状语 3）in the past in/during/over the past few years Miller had a healthy diet in the past. Miller has had a healthy diet in the past two years. in the past：用于一般过去时； in the past few years：用于现在完成时 现在完成时 区别一：一些易混淆的时间状语 4）in the last World Cup in/during/over the last few years He played well in the last World Cup. He has played well during the last years. in the last World Cup： 用于一般过去时； in the last few years： 用于现在完成时 现在完成时 区别二：动作是否持续现在 1）过去开始+持续到现在（现在还存在） 过去发生+持续一段时间但并未持续到现在（现在不存在） Jane lived in Changzhou for 5 years. And now she worked as a teacher in Nanjing. Jane lived in Changzhou for 5 years. 现在不存在：用于一般过去时； 现在还存在：用于现在完成时 现在完成时 区别三：动作是否持续现在 1）过去发生，当时已经结束，对现在无影响or无联系 过去发生，当时已经结束，对现在有影响or有联系 Stella has cleaned the romm this morning. How tidy and clean! Stella cleaned the room this morning