来源：网络转载现在完成时态讲解及练习一、现在完成时的构成肯定句： 主语+have/has+done(过去分词 )+其它HehaslivedinShenzhenfor4years. 一般疑问句： Have/Has+主语 +done(过去分词 )+其它HashelivedinShenzhenfor4years? 否定句 :主语+have/has+not+done(过去分词 )+其它Hehasnotfinishedhishomework. 过去分词的构成方法如下 ?: 1.一般情况下，直接在动词原形后面加?–ed. work---workedanswer---answered obey---obeyedwant---wanted? 2.以不发音的 ?-e?结尾的动词只加 ?–d.? Move---movedhope---hoped?divide---divided? 3.字尾是辅音 +y 的动词。则将 y 改 i 加 ed. study---studiedtidy---tidiedsatisfy---satisfied 4.以重读闭音节结尾的词，这些词的末尾只有一个辅音字母时，双写这个辅音字母，再加?–ed.stop---stoppedregret---?regretted?drop---dropped 不规则动词过去式与过去分词分类记忆表一、 AAA.（原形，过去式和过去分词一致）1. 花费cost cost cost 2. 割cut cut cut 3. 伤害hurt hurt hurt 4. 让let let let 5. 放put put put 6. 朗读read read read 7. 设置set set set 8. 打击，碰撞hit hit hit 9. 关上门窗shut shut shut 10. 让let let let 二、 ABB（过去式和过去分词一致）1)过去式、过去分词含有 -ought 1. 带来bring brought brought 2. 买buy bought bought 3. 打架fight fought fought 4. 想think thought thought 5. 寻找、探究seek sought sought 2)过去式、过去分词含有 -aught 5. 抓住catch caught caught 6. 教teach taught taught 3)过去式、过去分词 -t 替换原形 -d 7. 建筑build built built 8. 借出lend lent lent 9. 花费spend spent spent 10. 派遣send sent sent 4)过去式、过去分词在原形词尾加t 或 d 11. 学会learn learnt/ed learnt/ed 12. 意思mean meant meant 13. 燃烧burn burnt/ed burnted 13. 做梦dream dreamt/ed dreamt/ed 13. 处理deal dealt dealt 14. 听hear heard heard 5）过去式、过去分词改为 -ept 15. 保持keep kept kept 来源：网络转载16. 睡觉sleep slept slept 17. 扫sweep swept swept 6） 过去式、过去分词改为 -elt 18. 感觉feel felt fel 19. 嗅smell smelt/ed smelt/ed 20. 拼写...
