2017-2018学年牛津译林版八年级英语下册课件：Unit1 GrammarI (共18张PPT)

Grammar I No.24 Middle School Lu Min past present Eddie has lived with Millie since he was born. Eddie has lived with Millie for four years. past present 4 years Eddie was born four years ago. The Present Perfect Tense (现在完成时） 一.现在完成时的含义 现在完成时用来表示之前已发生或完成的动作或状态，其结果和现在有联系，动作或状态发生在过去但它的影响现在还存在；也可表示持续到现在的动作或状态。 二、现在完成时的构成 现在完成时的肯定句 句型: 主语（第一、二人称单复数）+ have +过去分词 We have lived in Nanjing for 10 years. e.g. I have finished my report. 主语（第三人称复数） +have + 过去分词 e.g. They have moved away. 主语（第三人称单数） +has +过去分词 e.g. He has been in Beijing for two months. 2. 现在完成时的否定句 句型主语+have/has+ not+过去分词 e.g. I have not seen Harry Potter yet. He hasn’t been to Tianjin since then. 3. 现在完成时的一般疑问句 句型 Have/Has+主语+过去分词 Have you….? Has he….? Yes, I have. Yes, he has. No, I haven’t. No, he hasn’t. 三、现在分词的构成 travelled moved stayed owned learned visited stopped finished shopped solved A 规则动词的过去分词 原形 过去分