2024年中考英语时态复习---Be动词，大用处课件

Be动词,大用处 初中中考时态复习- be 动词 是“状态动词”也叫“连系动词”表示 事物或人的 状态的 动词,常翻译为“是” be动词有各种“变身” be动词有很多用处 be动词的“定义” be动词的“变身” 一般现在时: 一般过去时: 进行时 将来时 现在完成时: am/is/are was/were being be been be动词的作用 帮助构成主系表结构 帮助构成不同时态 帮助构成不同语态 Be 动词帮助构成主系表结构 I am happy. She is a student. He is 12 years old. The purpose of the acivity is to protect the environment. My mother is at home. 形容词做表语 名词做表语 数词做表语 不定式做表语 介词短语做表语 I am happy. She is a student. He is 12 years old. The purpose is to protect the environment. My mother is at home. I am not happy. She is not a student. He is not 12 yeras old. The purpose is not to protect the environment. My mother is not at home. 改否定句 I am happy. She is a student. He is 12 years old. The purpose is to protect the environment. My mother is at home. Am I happy? Is she a students? Is he 12 years old? Is the purpose to protect the environment? Is my mother at home? 改一般疑问句 Be 动词帮助构成主系表结构 否定句在be 后加not; 一般疑问句把be调到主语前。 Be 动词帮助构成不同时态 现在进行时 I am watching TV. She is reading books. They are talking. 现在进行时结构:主语+be (am/is/are) +V-ing I am watching TV. She is reading books. They are talking. 现在进行时否定句:主语+be not+V-ing 改否定句 I am not watching TV. She is not reading books. They are not talking. I am watching TV. She is reading books. They are talking. 现在进行时一般疑问句: Be +主语+V-ing? 改一般疑问句 Am I watching TV? Is she reading books? Are they talking? Be 动词帮助现在进行时 否定句在be 后加not; 一般疑问句把be调到主语前。 过去进行时 I was watching TV at 8:00 last night. She was reading books at this time yesterday. They were talking at 7:00 yeserday mornig. 过去进行时结构: 主语+be(was/were)+V-ing I was watching TV at 8:00 last night. She was reading books at this time yesterday. They were talking at 7:00 yeserday mornig. 改否定句 I was not watching TV at 8:00 last night. She was not reading books at this time yesterday. They were not talking at 7:00 yeserday mornig. I was watching TV at 8:00 last night. She was reading books at this time yesterday. They were talking at 7:00 yeserday mornig. Was I watching TV at 8:00 last night? Was she reading boo