Present perfect tense,现在完成时态,Grammar(3),一、现在完成时谓语动词的构成：助动词have/has(not) +V-ed（过去分词）,I _(finish) the composition already.,He _(learn) English for three years.,We/You/ They.,She.,have finished,has learned,现在完成时态的含义是表示过去发生的或已完成的动作对现在造成的影响或结果。特点是既涉及过去，又联系现在：动作是过去发生的，结果是现在存在的。,She has gone. (她走了。)从这句话中动词所用的现在完成时态可以看出“走”的动作是过去发生的，而对现在所造成的结果是她不在这里了。,He speaks French so fluently. He learned it in Paris. He was there for two years.He has studied French. (他学过法语。)这句话所说明的结果是他现在懂法语。,Look! The blackboard is s
