初一现在进行时1. 定义:表示现在或现阶段正在进行的动作。常与now, these days等时间状语连用,句首有 Look ! / Listen !等提示语。 Im visiting my friends now. Look! He is sitting there.2.基本结构:be动词(am ,is ,are) +动词的现在分词构成(动词-ing)肯定句: be + doing 否定句: be + not doing 一般疑问句:Be动词提前到句子开头 +主语+doing记忆口诀: 现在进行主动宾,be +动词-ing要记清; 助动词(am, is ,are) 跟着主语变, am, is ,are + -ing; 变疑问,助动词(am, is ,are) 后主语跟, 变否定,助动词(am, is ,are) 后not跟。例句:肯定句: I am working. He is working. They are working.否定句: I am not working