小学五年级英语语法.doc

小学五年级英语语法:过去完成时用法:在过去的时间里,两个动作中,发生在前的那个动作要用过去完成时。结构: had+ 过去分词 After she had finished her homework, she went shopping. They had sold the car before I asked the price. The train had left before I arrived at the station. After/before 引导的时间状语从句放在句首要在句子后面加逗号, 如果放在主句后则不用加。 1. 变疑问句将助动词移到句首 Had she finished her homework? 2. 变否定句在助动词后面加 not She hadn ’t finished her homework. 3. 肯定回答及否定回答 Yes, she had. No, she hadn ’ t. 4. 特殊疑问句: What had she done? 小学五年级英语语法:现在完成时构成:主语+ 助动词 have, has+ 过去分词用法: 2) 表示过去发生的和现在有某种联系的动作,常和 just, usually, already, since 等时间副词连用 I have just had lunch. ( 饱了,不用再吃了) He has had a cup of tea.( 不渴了,不用再喝) They have already had their holiday. ( 不能再度假了) The boy has already read the book. ( 已经知道书的内容了,不用再看了) 3) 询问别人是否做过某事一般用现在完成时: Have you finished your homework? Have you been to Beijing? Have he seen the film? 4) 表示开始于过去并持续到现在的动作 I have lived in Beijing for twenty years. I have worked for this school for 1 year. 5) 表示一种经历,经验:去过…地方,做过…事情,经历过…事情 I have never had a bath. I have never seen a film. I have never been to cinema. I have ever been to Paris. Have been to 表示去过, have gone to 表示去了 I have been to London.( 人已经回来) He has gone to London.( 人还在那里) 6) 表示一种结果, 一般不和时间副词联用 I have lost my pen. I have hurt myself. He has e a teacher. She has broken my heart. 句型变化: ★变疑问句将助动词移到句首,变否定句在助动词后面加 not. . Have you lost your pen? I have not lost my pen. ★肯定回答及否定回答 Yes, I have. No, I have not. ★特殊疑问句: What have you done? What has he done? 一般过去时与现在完成时的区别: 凡是有明确的表示过去的时间状语的句子为过去时注意:有些动词表示的动作有一个终点,不能再延续,因此不能和表示一段时间状语连用错: I’ ve left Beijing for 3 days. 对: I left Beijing 3 days ago. I have been away from being for 3 days. 小学五年级英语语法:过去式表示过去发生的动作或事件, 常和表示过去的时间状语连用, 如 yesterday, last night, the day before yesterday, 3 days ago, 含有 be 动词的句子, 将动词变为过去式, am, is 的过去式为 was , are 的过去式为 were I was at the butcher ’ s. You were a student a year ago. The teacher was very beautiful ten years ago. ★变疑问句将 be 动词移动到句首 Were you at the butcher ’ s? Were you a student a year ago? Was the teacher very b