Unit 10 I‘ve had this bike for three years.-2020-2021学年八年级英语下册语法知识归纳（人教版）

v Unit10 I’ve had this bike for three years. 现在完成时态知识点归纳（三） 1.定义：现在完成时( The Present Perfect Tense)表示动作发生在过去，但对现在仍有影响。 2.现在完成时常用的时间状语 ①副词：already已经，just刚刚，ever曾经，never从未，before从前，yet还，已经等 ②表示到目前为止的次数：once一次，twice两次等 ③表示到目前为止的一段时间，表示过去已经开始，持续到现在的动作或状态。常与since+过去的时间点，for+一段时间等时间状语连用。e.g for five years，since 2013 3.过去分词变化规则 ①一般动词直接+“-ed” ②以e结尾的动词直接+d ③以辅音字母+y结尾的动词，变y为i再+ed ④重读闭音节，末尾只有一个辅音字母，先双写该辅音字母再+ed ④不规则变化 Since,for在现在完成时态中的运用 ①表示过去的某一动作或行为一直持续到现在：现在完成时表示动作发生在过去，但一直持续到现在，并且有可能继续持续下去，常与“since+时间点”，“for+时间段”等表示一段时间的时间状语连用，谓语动词为延续性动词。 e.g.I have worked here for ten years (我在这儿工作已经有10年了） He has been married for ten years.（雅安中考） Marry(结婚）是非延续性动词，在完成时态中非延续性动词不能与表示一段时间的状语连用，此时需要将其转换为相应的延续性动词或者状态动词。 ② 非延续性动词转换为延续性动词 非延续性动词 延续性动词 arrive be here die be dead Come back be back finish be over open be open join be in/ be a member of borrow keep get up be up go to school be a student buy have get married be married begin(start) be on 练一练 从方框内选择适当的选项补全对话。 A：__1____ B:Yes,it is. It is winter in China now. A:Oh, I don’t like cold weather but I like snow. B:Really? __2___ A:No, never. This is my first time to see it. B:By the way. __3___ A:Oh,it’s rather different from the weather here. It’s summer there now, you know. ___4___ B:That’s great. A:You may come to Australia some day. B:Sure. ____5____ 1._____ 2.______3.______ 4._______ 5._______ 【答案】CEDAB 句型转换 1.It’s five years since he became a football player. (改为同义句） He________ _________ a football player for five years. 【答案】has been 【解析】“for five years”for+时间段，故该题用现在完成时，become为非延续性动词，不可与for+时间段连用，可用be来替换，故用has been 2.She has had the job for a year.(对划线部分提问） _______ ________ _______ she had the job? 【答案】How long has 3.I have been to many places of interest in America.(改为一般疑问句） ________ ________ _______ to many places of interest in America? 【答案】Have you been 4.I spent two hours cleaning my room.(改为同义句） It__