精选优质文档-倾情为你奉上现在进行时结构be(am, is,are)+动词ing.我用am, 你用are,Is 用在他,她,它,我们, 你们,他们全用are。一、 动词加ing的变化规则1. 一般情况下,直接加ing如:look - looking, climb - climbing, jump - jumping,2. 以不发音的e结尾,去e加ing.(see的e是发音的,所以不能去掉,要直接加ing。see - seeing )如:make - making, have - having, ride - riding, write - writing, drive driving3. 如果末尾是一个元音字母和一个辅音字母,双写末尾的辅音字母,再加ing.(但是open却不属于这规则,而是直接加ing, open-opening)如:run - running, swim - swimming, sit - sitting, cut-cutting, hop -