济南中考真题系列2：现在完成时

现在完成时专练 一、现在完成时 概念:1.表示过去发生或已经完成的动作对现在造成的影响或结果. 2.表示过去已经开始,一直延续到现在的动作或状态。 结构：have/has + 过去分词 (当主语是第三人称单数时用has,其余人称用have。 过去分词:规则动词的过去分词构成与动词过去式相同;不规则动词需要特殊记忆。) 否定式: 主语 + haven't/hasn't + 过去分词 + 其他。 疑问式: Have /Has + 主语 + 过去分词 + 其他? 简略答语: Yes, 主语 + have/has.(肯定)No, 主语 + haven't/hasn't.(否定) 经典句型： 我买这辆自行车三年了。 ① I ________ this bike three years ago. ② I ______ ______ this bike _______three years. ③ I ______ ______ this bike _______three years ago. ④ It _______ three years since I ________ this bike.. ⑤ Three years has passed since I _______ this bike. 答案① bought ② have had for ③have had since ④ is bought ⑤ bought 基础练习 一、根据句意，用for 或 since 填空。 1. The dog hasn’t eaten any food __________ several days. 2. I haven’t written to my parents __________ I left home. 3. We have learned ten lessons __________2003. 4. He has studied at this school _________ three years. He will finish school in June. 5. We haven’t seen each other __________ last October. How are things with you? 二、