初一现在进行时及习题练习 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。 I’m 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. He is not working. They are not working. 疑问句：Are you working? Is he working? Are they working? 回 答：Yes, I am . Yes, he is. Yes, they are. No, I’m not. No, he isn’t. No, they aren’t. 注意：现在进行时的特殊用法： 1）现在进行时与always 连用时，往往含有赞扬、厌恶、责备等感情色彩。 如： He is always working hard.他总是非常努力地工作。(表示赞扬) 2）come, go, begin, start, leave 等动词常用现在进行时表示将要发生的动作。 She is leaving China tomorrow. I'm going to school. 3. 现在分词的变法规则： 当我们说某人正在做什么事时，动词要使用分词形式，不能用原形，构成如下： 一）一般在后加 ing。如： sing-singing, see-seeing, play-playing, go-going, do-doing, 二）以不发音 e 的结尾的去掉 e 再加 ing。如：write-writing, have-having, come – coming 来 ；close - closing 关 ；make – making 制造 ride – riding 骑； write - writing 写 ;take - taking 拿走 ; have – having 有 ； 三）以重读闭音节结尾且一个元音字母＋一个辅音字母（注意除开字母组合如 show – showing, draw-drawing）要双写最后的辅音字母再加 ing。如：put-putting, run-running, get-getting, let-letting, begin-beginning; sit- sitting ；cut – cutting 切 ;shop-shopping 购物；begin-beginning 开始 forget-forgetting 忘记；st...
