现在完成时语法课件人教版八年级英语下册.pptxVIP

现在完成时讲解现在完成时讲解0例句感知— Are you surprised at the ending of the movie?— No, because I have read the story.I have finished reading the storybook. You can ask me anything about it.I have had my lunch. I’m full now. 现在完成时的结构：主语+have/has（助动词）+过去分词当主语是第三人称单数时，助动词用has，其它人称一律用have。He has lived here for 40 years.We have stopped the bus.I have turned off the lights.过去分词①规则动词的过去式就是过去分词。②不规则动词的过去分词要参照不规则动词表来记忆。现在完成时的用法He has lived here for 40 years.He has not lived here for 40 years. have not=haven’t has not= hasn’tHas he lived here for 40 years？Yes，he has.No，he hasn’t.现在完成时的用法模仿练习We have stopped the bus.We haven’t stopped the bus.Have you stopped the bus?Yes，we have.No，we haven’t.例句展示：I have lived here for ten years.我已经住在这里十年了。（从过去的某一时间开始住在这里，一直住到说话时刻。）I have lived here since 2003.自从2003年我就住在这儿。（自从2003年开始，我一直都住在这儿。）现在完成时的用法（一）现在完成时用于描述过去发生的动作对现在造成的影响或结果。I have finished my homework. I can play ping - pong now.我已经完成了家庭作业。我现在可以打乒乓球了。 I have made a mistake. Let me correct it.我犯错了。让我来纠正它。 already和yet意思 already和yet都有“已经”的意思。 already常用于肯定句中。 yet用于否定句时，意为“尚未……” 或者“还没……” yet用在疑问句时，意为“已经”1.They have ______ built two factories in their hometown.2.— Have you finished your work_______?— Yes, I’ve done it________.3.I told him about it two days ago, but he hasn’t decided what to do ________.4. I’ve_______seen the film twice.5. This movie is good. I have seen it________. already yet already yet already already 句型转换1. Have you decided which house to buy？（作肯定回答）________，__________.2.His sister has cleaned the room.（改为否定句）His sister______ ________the room.3.I’ve never forgotten the beauty of the West Lake. (改为一般疑问句)_____ _____ never forgotten the beauty of the West Lake？ No I haven’t hasn’t cleanedHave you 翻译句子1.— Have you seen the movie yet?— No, not yet.你已经看过这个电影吗？ 不，还没有。2. I have already given the book back to you.我已经把这本书还给你了。 现在完成时用法（二）表示从过去某一时间开始并一直持续到现在的动作或状态, 这个动作或状态还有可能持续下去。常与since+过去的时间点，for+一段时间，so far（到目前为止）等时间状语连用。时间点和时间段的区别时间点：指的是一个具体的时间。比如：8点，10点