七.雅思口语时态之现在完成时 概念:从过去某个不确定的时间开始,到现在为止已经完成的动作,并对现在造成一定的影响。 结构: 主语+ have/has + V过去分词 动词变化规则: 不规则变化: AAA, ABB, ABC; 标志词: 1.Already, just, yet.; 2.Ever,never,置于have/has后; e.g. Have you ever been to China? I have never been to China before. 3. for+一段时间,since+时间点; e.g. I have lived in London for 20 years. I have lived inLondon since 1999. 4. so far, up to now, lately, recently. 用法: 1. Have been to和have gone to区别; 2. 瞬间动词用于现在完成时不能和一段时间连用,需用对应的延续性动词代替; e.g. Where isthe boss? He has left. He has been away for 3 hours. 注: 八.雅思口语时态之过去完成时 概念:表示一个动作在过去某一时间或某一动作前已经完成。 结构: 主语+had +done 动词变化: 1. 规则变化 2. 不规则变化 标志词: by+过去时间状语 e.g. He hadfinished his work by then. 用法: 可与过去时间状语连用,常用after,before,when来连接。 e.g. After hehad finished his homework, he went out. 九.雅思口语时态之现在完成进行时 概念:从过去某个不确定时间开始,到现在已经完成,有可能继续下去。 结构: 主语+has/have been +V-ing e.g. I havebeen learning English for 20 years. 动词变化规则: 规则变化 标志性词语: Sofar, up till now, all night, all day, the whole day. e.g. He has been writing the novel all night.
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