1、小学英语四大时态各时态句式1、含有 be 动词的句子：否定句：在 be 动词后加 notHe is not a teacher. (is not=isnt)You were not at home yesterday. (were not=werent)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
2、swim tomorrow?时态 概念 结构 关键词一般过去时表示过去发生的动作或存在的状态动词变为过去式 过去的时间词：yesterday, last week, three years ago一般现在时经常性发生的动作或存在状态主语为“三单” ，动词加 s/es；非“三单” ，动词用原形频度副词：sometimes, usually, often, always, never, seldomevery day现在进行时现在正在发生的动作 be + v.ing Listen, look, now, at+具体时间点一般将来时将来发生的动作或存在的状态be going to/will 动词原形
3、将来的时间词：tomorrow, the day after tomorrow, next+一段时间(含有情态动词的句子，将情态动词看成 be 动词，一样方式进行变换)2、含有实义动词的句子否定句：请助动词 do, 在 do 后加 not，句中实义动词用原形注意：dodoes, did, dont- doesnt, didntI do not like him. (do not = dont)He doesnt like apples.You didnt 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?
