📘 新概念英语第二册 / Lesson 4 · An Exciting Trip

Lesson 4: An Exciting Trip

📖 关键句型：现在完成时 (Present Perfect)  |  📝 第 4 课 / 共 96 课

📜 课文 · Text

An exciting trip

I have just received a letter from my brother, Tim. He is in Australia. He has been there for six months. Tim is an engineer. He is working for a big firm and he has already visited a great number of different places in Australia. He has just bought an Australian car and has gone to Alice Springs, a small town in the centre of Australia. He will soon visit Darwin. From there, he will fly to Perth. My brother has never been abroad before, so he is finding this trip very exciting.

一次激动人心的旅行

我刚收到弟弟蒂姆的一封信。他在澳大利亚。他在那儿已经待了六个月了。蒂姆是个工程师。他在一家大公司工作，而且已经去过澳大利亚的许多地方了。他刚买了一辆澳大利亚小汽车，去了澳大利亚中部的一个小镇——艾丽斯斯普林斯。他不久还将到达尔文去，从那里再飞往珀斯。我弟弟以前从未出过国，所以他觉得这次旅行非常激动人心。

📝 词汇 · Vocabulary

exciting/ɪkˈsaɪtɪŋ/adj. 令人兴奋的
receive/rɪˈsiːv/v. 收到，接到
firm/fɜːm/n. 公司，商号
different/ˈdɪfərənt/adj. 不同的
centre/ˈsentə/n. 中心
abroad/əˈbrɔːd/adv. 在国外

🔑 关键句型：现在完成时 (Present Perfect)

结构公式

主语 + have/has + 过去分词 (past participle)

✅ 肯定：I have received a letter.
❌ 否定：He has not / hasn't visited Darwin yet.
❓ 疑问：Have you been to Australia?

课文中所有的现在完成时

主语have/has过去分词宾语/状语
Ihavereceiveda letter from my brother
Hehasbeenthere for six months
Hehasvisiteda great number of places
Hehasboughtan Australian car
Hehasgoneto Alice Springs
My brotherhasbeenabroad

本课核心：现在完成时的四个用法

用法含义课文例子
1️⃣ 已完成 刚完成的动作（just） I have just received a letter.
2️⃣ 经历 曾经/从未做过某事 He has never been abroad before.
3️⃣ 已发生 某事已经发生（already） He has already visited many places.
4️⃣ 持续状态 从过去到现在（for/since） He has been there for six months.

本课五大标志词

标志词含义位置例句
just刚刚have/has + just + 过去分词I have just received...
already已经have/has + already + 过去分词He has already visited...
never从未have/has + never + 过去分词He has never been abroad...
ever曾经用于疑问句Have you ever been to Japan?
yet还未否定句/疑问句句尾He hasn't visited Darwin yet.
💡 提示：现在完成时强调的是"现在"的结果/状态，而不是"过去"的动作时间。所以不能说 I have arrived yesterday.（✘）→ 因为 yesterday 是具体过去时间。
✅ 正确：I arrived yesterday.（一般过去时）或 I have just arrived.（现在完成时）

⚡ 重点对比：一般过去时 vs 现在完成时

一般过去时现在完成时
关注点动作发生的时间（过去）动作与现在的联系
时间词yesterday, last week, 3 years agojust, already, ever, never, yet, for, since
问句When did you arrive?Have you arrived yet?
课文对比I received a letter.（刚刚收到这个动作）I have received a letter.（强调现在已经收到）

✏️ 练习

练习 1：用 have/has + 过去分词完成句子
  1. She _______________ (just / finish) her homework.
  2. They _______________ (already / visit) the museum.
  3. I _______________ (never / be) to Japan.
  4. He _______________ (not / receive) my letter yet.
  5. ________ you _______________ (ever / eat) Italian food?
答案：
1. has just finished
2. have already visited
3. have never been
4. has not received / hasn't received
5. Have ... ever eaten
练习 2：用动词的正确时态填空（一般过去时或现在完成时）
  1. I _______________ (see) that film last night.
  2. She _______________ (never / see) that film.
  3. He _______________ (buy) a new car yesterday.
  4. They _______________ (already / buy) their tickets.
  5. ________ you _______________ (visit) the Great Wall when you were in China?
  6. I _______________ (not / eat) anything since breakfast.
答案：
1. saw（last night → 具体过去时间，用一般过去时）
2. has never seen（经历，never → 现在完成时）
3. bought（yesterday → 具体过去时间）
4. have already bought（already → 现在完成时）
5. Did ... visit（when you were in China → 已经结束的时段）
6. have not eaten（since breakfast → 从早饭到现在）
练习 3：中译英
  1. 我刚收到一封来自澳大利亚的信。
  2. 他去过很多不同的国家。
  3. 我以前从未出过国。
  4. 他已经买了去北京的票。
  5. 你吃过寿司（sushi）吗？
参考答案：
1. I have just received a letter from Australia.
2. He has visited many different countries.
3. I have never been abroad before.
4. He has already bought a ticket to Beijing.
5. Have you ever eaten sushi?

🔍 特殊难点

1. has gone to vs has been to vs has been in

含义现在在哪？例句
has gone to去了（还没回来）在那里 / 在路上He has gone to Alice Springs.
has been to去过（已经回来了）回来了I have been to Australia twice.
has been in待在（持续状态）还在那里He has been in Australia for six months.
⚠️ 特别注意：课文里既有 has gone to Alice Springs（去了还没回来），也有 has been there for six months（已经在那六个月了）。前者强调"去"的动作已完成，后者强调"待在那"的状态持续。

2. a great number of = 许多（+ 可数名词复数）

3. receive vs take

4. abroad（副词，前面不加介词）

🔗 固定搭配 · Useful Collocations

receive a letter from sb收到某人的来信
work for a big firm在一家大公司工作
a great number of大量的（+可数名词）
go abroad出国
fly to + 地点飞往某地
has gone to去了（还没回）
has been to去过（已回）
has been in待在（持续状态）
find sth + adj.觉得某事…

🎤 口语练习

用英文完整回答以下问题（用现在完成时或一般过去时）
  1. Have you ever been abroad? Where have you been?
  2. Have you ever received a postcard from a friend?
  3. What have you just done? (e.g. I have just finished...)
  4. How long have you studied English?

💡 注意区分：Have you ever been to...?（经历） vs When did you go there?（过去具体时间）

📌 本课要点回顾

📖 继续下一课 Lesson 5: No Wrong Numbers（一般过去时 vs 现在完成时对比）
有任何问题，告诉 AI 助教！