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现在进行时： 关键词：look(看) listen(听) now(现在) 具体时间（几点钟） 结构：am,are,is+ 动词 ing 例： I am cooking 否定句：am,are.is+not + 动词 ing 一般疑问句：am,are,is+动词 ing ……？ 肯定回答： yes. 否定回答：No 动词加 ing 的规律：1、直接加ing: go – going; do – doing 2、以不发音的e结尾，把e去掉加ing : write – writing; have – having 3、双写末尾字母加ing : run – running; swim – swimming skip—skipping sit – sitting begin – beginning get – getting put – putting shop – shopping | 
