Unit6语法讲解及习题：现在完成时与一般过去时（Present perfect and the simple past -2025-2026学年沪教版英语八年级上册

沪教（牛津）英语八上Unit6语法讲解及习题 现在完成时与一般过去时（Present perfect and the simple past） 一、核心语法点：现在完成时 vs 一般过去时 1. 根本区别 一般过去时（Simple past）：描述过去发生且已结束的动作，强调动作本身，与现在无关联。 现在完成时（Present perfect）：描述过去动作对现在的影响，或从过去持续到现在的状态/动作，强调与现在的联系。 2. 时间状语区分（关键判断依据） 时态 常见时间状语 （看到优先用该时态） 例句 一般过去时 yesterday, last night, in 2010, three days ago, just now, at that time They left last night.（他们昨晚离开了。） 现在完成时 already, yet, ever, never, just, since, for, so far, up to now I have waited so long for this moment.（我等这一刻等了很久了。） 二、详细用法与结构 （一）一般过去时 1. 定义：动作发生在过去，且在过去已经结束，与现在无关。 2. 结构： 肯定：主语 + 动词过去式 否定：主语 + didn’t + 动词原形 疑问：Did + 主语 + 动词原形…? 3. 例句： The Greeks captured the city through a trick.（希腊人通过计谋攻下了这座城。→ 动作发生在过去，已结束） They left a huge wooden horse near the city.（他们在城边留下了一匹巨大的木马。→ 动作发生在过去，已结束） （二）现在完成时 1. 两大核心用法： 用法1：过去动作对现在的影响 例：The Greeks have gone.（希腊人已经走了。→ 现在他们不在这里了。） 例：I have finished my homework.（我已经完成作业了。→ 现在作业是完成的状态。） 用法2：动作从过去持续到现在（常与 for + 时间段 / since + 时间点 连用） 例：I have been in Beijing for a week.（我在北京已经待了一周了。→ 现在还在北京） 例：She has stayed with her host family since 14 October.（她从10月14日起就和寄宿家庭住在一起。→ 现在仍住在一起） 2. 结构： 肯定：主语 + have/has + 过去分词 否定：主语 + have/has + not + 过去分词（缩写为 haven’t / hasn’t） 疑问：Have/Has + 主语 + 过去分词…? 3. 注意：现在完成时绝对不能与具体过去时间状语（如 yesterday, last night）连用。 错误：I have seen him yesterday. ❌ 正确：I saw him yesterday. ✅ （三）易混对比（考试必考） He lived in Paris for 5 years.（他在巴黎住过5年。→ 现在不住了） He has lived in Paris for 5 years.（他在巴黎住了5年了。→ 现在还住） 三、语法习题 题型一：判断正误并改正 判断下列句子是否正确（✓）或错误（✖）。如果错误，请划出错误部分并改正。 1. The Trojan War has lasted for about ten years. ( ) 2. Who broke into the shop last night? ( ) 3. There have been many famous poets in the Tang dynasty. ( ) 4. I have had a history lesson yesterday. ( ) 5. The King of Sparta has started the war. ( ) 6. Ellie learnt a lot about Greek history since she joined the History Club. ( ) 题型二：用所给动词的适当形式填空 Complete the diary entry below with the correct form of the verbs in brackets. Thursday, 10 November Dear Diary, A new bookshop ¹ ______________ (open) the day before yesterday near my school. I ² ______________ (go) there with my cousin this afternoon. I ³ ______________ (buy) a travel book about Greece. I ⁴ ______________ (never be) to Greece, but my cousin ⁵ ______________ (visit) the country last year. I ⁶ ______________ (see) some of her photos. Greece is such a beautiful country. My cousin ⁷ ______________ (buy) a book about ancient Greece at the bookshop. I ⁸ ______________ (read) a few pages of the book with her. I think it's very interesting. 题型三：单项选择 1. The Greeks ______ last night. A. have gone B. went C. go D. gone 2. We ______ so long for this moment. A. wait B. waited C. have waited D. are waiting 3. They ______ a huge wooden horse near the city. A. leave B. left C. have left D. are leaving 4. Who ______ into the shop last night? A. break B. broke C. have broken D. breaks 5. There ______ many famous poets in the Tang dynasty. A. are B. were C. have been D. had been 6. I ______ a history lesson yesterday. A. have B. had C. have had D. am having 7. The King of Sparta ______ the war. A. starts B. started C. has started D. is starting 8. Ellie ______ a lot about Greek history since she joined the History Club. A. learns B. learnt C. has learnt D. is learning 9. The Trojan War ______ for about ten years. A. lasts B. lasted C. has lasted D. is lasting 10. I ______ never ______ to Greece, but my cousin ______ there last year. A. have; been; visited B. have; gone; visited C. had; been; has visited D. had; gone; has visited 11. I ______ some of her photos. Greece is such a beautiful country. A. see B. saw C. have seen D. am seeing 12. My cousin ______ a book about ancient Greece at the bookshop. A. buys B. bought C. has bought D. is buying 13. I ______ a few pages of the book with her. I think it's very interesting. A. read B. have read C. am reading D. reads 14. The Greeks ______ so many things in the past. A. do B. did C. have done D. are doing 15. We ______ many stories about ancient wisdom since we were children. A. hear B. heard C. have heard D. are hearing 题型四：句型转换 1. The Greeks have gone. They left last night.（合并为一句） The Greeks have gone; they ______________ last night. 2. We have finally won! I have waited so long for this moment.（改为一般过去时） We finally won! I ______________ so long for this moment. 3. They left a huge wooden horse near the city.（改为现在完成时） They ______________ a huge wooden horse near the city. 4. The Trojan War has lasted for about ten years.（改为一般过去时） The Trojan War ______________ for about ten years. 5. I have had a history lesson yesterday.（改正句子） I ______________ a history lesson yesterday. 6. Ellie learnt a lot about Greek history since she joined the History Club.（改正句子） Ellie ______________ a lot about Greek history since she joined the History Club. 四、答案与详细解析 题型一：判断正误并改正 1. ✖，改正：The Trojan War lasted for about ten years.（特洛伊战争是过去的历史事件，已结束，用一般过去时。） 2. ✓ 3. ✖，改正：There were many famous poets in the Tang dynasty.（唐朝是过去的朝代，用一般过去时。） 4. ✖，改正：I had a history lesson yesterday.（yesterday 是具体过去时间，用一般过去时。） 5. ✖，改正：The King of Sparta started the war.（战争是过去发生的动作，已结束，用一般过去时。） 6. ✖，改正：Ellie has learnt a lot about Greek history since she joined the History Club.（since 引导的时间状语从句，主句用现在完成时。） 题型二：用所给动词的适当形式填空 1. opened 2. went 3. bought 4. have never been 5. visited 6. have seen 7. bought 8. have read 题型三：单项选择 1. B 解析：last night 是具体过去时间，用一般过去时。 2. C 解析：强调从过去持续到现在的等待，用现在完成时。 3. B 解析：动作发生在过去，用一般过去时。 4. B 解析：last night 是具体过去时间，用一般过去时。 5. B 解析：唐朝是过去的朝代，用一般过去时。 6. B 解析：yesterday 是具体过去时间，用一般过去时。 7. B 解析：战争是过去发生的动作，用一般过去时。 8. C 解析：since 引导的时间状语从句，主句用现在完成时。 9. B 解析：特洛伊战争是过去的历史事件，已结束，用一般过去时。 10. A 解析：never 表示“从未”，用现在完成时；last year 是具体过去时间，用一般过去时。 11. C 解析：强调过去动作对现在的影响（已经看过照片），用现在完成时。 12. B 解析：动作发生在过去（下午去书店），用一般过去时。 13. B 解析：强调过去动作对现在的影响（已经读过几页），用现在完成时。 14. B 解析：in the past 表示过去的时间，用一般过去时。 15. C 解析：since we were children 表示从过去持续到现在，用现在完成时。 题型四：句型转换 1. left 2. waited 3. have left 4. lasted 5. had 6. has learnt ( 1 ) 学科网（北京）股份有限公司 $