动词时态总复习之六现在完成时 概念：过去发生或已经完成的动作对现在造成的影响或结果，或从过去已经开始，持续到现在的动作或状态。【自我检测】：1. -_ you ever _America ? -Yes, I have.A. Have gone to B. Have gone in C. Have been to D. Have been in2.-_you _ the text yet ? -Yes, we _ it two hours ago. A. Did, copy; did B. Have, copied; haveC. Have, copied; did D. Did, copy; had3.I hope I _ no mistake in my work so far.A. make B. am making C. have made D. was making4.You _ me waiting for two hours. I _ for you since five.A. Keptwaited B. have keptwaited C. kept, have waited D. have kept, have waited5. -Where _John _? -To the library. He _ there for an hour.A. has, been; has gone B. has, gone; has beenC. did, go; went D. did, be; went6. Her grandpa_ for three years.A. has been dead B. has died C. had been dead D. died【自我小结】一、判断是否用现在完成时常注意的标志词有：1(1). just 刚刚 (2). never从不 (3). before以前（常出现在句尾） (4). ever曾经 (5). already已经（肯定句） (6). yet已经（疑问句或否定句句尾） (7). Not yet还没有 (8): 注意：just （现在完成时） just now（一般过去时）2. 表示持续性时间 (1). Since + 过去的具体时间点（动作发生的起点） 自从. (如题4 ) Since+时间段ago 自从.时间前始至今 Since+过去时态的从句自从做某事始至今 (2). For + 时间段,已经.长时间了（如题4,6）(3) . How long 多长时间2、 现在完成时态的句子中，谓语动词形式 是：have/has+_.3、 几个特殊的现在完成时结构1.“have/ has been to + 地名”表示“_”, 说话时人已回到说话地点。常与 once, twice 等表示次数的词，或never, ever等时间状语连用。 2.“have/ has gone to + 地名”表示“_”,说话时人没在说话地点。常用于以“Where.?” 作寻找某人的语境中。3.“have/ has been in+ 地名”表示“_” 指某人或某物一直在某地。四、表示短暂性动作的动词如 come, go, leave, buy, sell, marry, die，borrow ,lend, begin等的完成时态不能与表示时间段的状语连用。但可改为其他表示相同意思的_动词或短语（如题6）。你知道上面动词所对应的词吗？ 自我思考】 1.现在完成时的句子其肯定形式，否定形式和疑问形式各是什么？2.动词的过去分词的变化规则是什么？所有的动词都是规则变化吗？3.现在完成时和一般过去时的区别是什么？【能力提升】1.I have been there since two years .A B C D改错，并说明理由：2.I have bought the bike for 3 months .A B C D改错，并说明理由：3.She _ this book for nearly three weeks. A. has borrowed B. has lentC. has bought D. has kept4. - Why wont you go to the movie with me, Gina? - Because I it twice.【2011襄阳】 A. see B. have seen C. saw D. will see5.-Have you ever been to Shanghai? -Yes. I _ there a few months ago. A. have been B. went C. have gone D. be 6.They _ England and they will be back next week. 【2014雅安】A. have gone to B. have been to C. have gone in D. has been on3