小学英语四大时态 时态 概念 构造 一般过去表示过去发生的动作或动词变为过去式 时 存在的状态 关键词 过去的时间词：yesterday, last week, three years ago 一般现在经常性发生的动作或存主语为“三单〞，频度副词：时 在状态 动词加s/es；非“三sometimes, usually, 单〞，动词用原形 often, always, never, seldom every day 现在进展现在正在发生的动作 be + v.ing Listen, look, now, 时 at+具体时间点 一般将来将来发生的动作或存在be going to/will 将来的时间词：时 的状态 动词原形 tomorrow, the day after tomorrow, next+一段时间 各时态句式 1、含有be动词的句子： 否认句：在be动词后加not He is not a teacher. (is not=isn’t) You were not at home yesterday. (were not=weren’t) I am not doing my homework. She is not going to swim tomorrow. 一般疑问句：把be动词提到主语前面，句号变问号 Is he a teacher Were you at home yesterday Are you doing your homework Is she going to swim tomorrow (含有情态动词的句子，将情态动词看成be动词，一样方式进展变换) 2、含有实义动词的句子 否认句：请助动词do, 在do后加not，句中实义动词用原形 注意：do—does, did, don’t- doesn’t, didn’t I do not like him. (do not = don’t) He doesn’t like apples. You didn’t like him. 一般疑问句：在请助动词do, 将do提到主语前面，句中实义动词用原形 Do you like me Does he like apples Did you go to school yesterday 3、特殊疑问句，助动词和be动词都要放在特殊疑问词后、主语之前 What do you usually do on Sunday What are you doing here Where are you going to visit on holiday 本文来源：https://www.wddqw.com/doc/90cf0e9d3286bceb19e8b8f67c1cfad6195fe907.html