(
课件网) 六大时态 现在完成时 One.语境 1.表示过去发生的动作对现在造成的影响或结果———结束性用法。 E.g. I have already read the book. Tom has just come back from school. Li Ming has just turned off the light. She has become a teacher. We have visited your school before. 1. — I’ve got the final Harry Potter book. — You will love it. I _____ it twice already. A. am reading B. have read C. was reading D. will read 2. — Tony, _____ you _____ smoking — Yes. Drinking tea is my favorite now. A. will; stop B. did; stop C. would; stop D. have; stopped 2.表示从过去动作发生后持续到现在，也许还要持续下去———持续性用法 常用动词：延续性动词 时间状语：for+一段时间，since+过去时间点或从句，so far E.g. I’ve lived here since 2007. I haven’t seen him for three years. He has lived here for twenty years. They’ve known each other since ten years ago. Mr. White came to our school in 2018, and since then he _____ us English. A. teaches B. taught C. has taught D. will teach 2. Sam came to Beihai in 2020. He _____ here for nine years. A. lives B. was living C. has lived D. will live Two.动词结构 结构：have/has done 肯定式 否定式 疑问式 I/ We/ You/ They have worked. He/ She/ It has worked. I/ We/ You/ They have not worked. He/ She/ It has not worked. Have I/ We/ You/ They worked Has He/ She/ It worked Three.动词变化 1. 一般在词尾加ed； 2. 辅音字母加y结尾，把y改成i，再加ed； 3. 以重读闭音节结尾，末尾只有一个辅音字母，双写辅音字母，再加ed； 4. 不发音的字母e结尾，只加d。 规则动词的变化形式 不规则动词的变化形式 AAA型 cut-cut-cut hurt, hit, let, put, set, spread, slit… ABB型 bring-brought-brought buy, bend, build, catch, dig, fight, have, hide… ABC型 do-did-done begin, choose, drink, eat, fly, know, ring, rise… ABA型 come-came-come become-became-become run-ran-run AAB型 beat-beat-beaten AAA&ABB型 bet-bet/betted-bet/betted bid, knit, rid, wed &wet Four.时间状语 already 肯定句“已经” (助动词后、过去分词前，也可放句末) yet 疑问句中“已经” 否定句中“还”常放在句末 E.g. I’ve washed my clothes already. E.g. --Has he found his pen yet --No, not yet. for+一段时间 since+时间点/从句(一般过去时) since+一段时间+ago E.g. It has rained since three days ago. We have reported the sports meeting since last Monday. E.g. I have lived here for ten years. in the past few years, by the time so far, up to now, until now, by now到目前为止 表次数的短语 E.g. I have ever been to Beijing five times. I’ve seen the movie E.T. several times. just “刚刚” E.g. I’ve just finished my homework. ever 疑问句、否定句“曾经” E.g. Have you ever been to Australia never“从来没有”常与before连用 before“以前”，放在句末 E.g. I have never been to Beijing. E.g. I have seen that film before. Five.热门考点 have been to, have gone to, have been in （1）have been to表示“曾经去过某地”，说话时已回到说话地点，常与once，twice，never，ever等时间状语连用。 （2）have gone to 表示“到某地去了”，主语已到某地或在去某地的途中，说话时没有回来，不在说话的地点 ... ...
