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以—ing结尾的词有多种.不易区分的主要有:—ing分词“—ing particliple”.名词化了的—ing形式和形容词化了的—ing形式.例如:①We are considering how to reorganzie the production progress.我们正在考虑改革生产过程.②I am looking forward to seeing you at Christmas.我期待着圣诞节时与你相会.③The designing of a new factory takes time.