第64课 The Channel Tunnel 深度语法分析
课号：第64课（共96课）
标题：The Channel Tunnel（海峡隧道）
核心语法重点：虚拟语气全类型（与现在/过去/将来事实相反）+ suggest建议虚拟 + 被动语态
难度等级：★★★★☆（四级进阶）
课文原文
In 1858, a French engineer, Aime Thome de Gamond, arrived in England with a plan for a twenty-one mile tunnel across the English Channel. He said that it would be possible to build a platform in the centre of the Channel. This platform would serve as a port and a railway station. The tunnel would be well-ventilated if tall chimneys were built above sea-level. In 1860, a better plan was put forward by an Englishman, William Low. He suggested that a double railway tunnel should be built. This would solve the problem of ventilation, for if a train entered this tunnel, it would draw in fresh air behind it. Forty-two years later a tunnel was actually begun. If, at the time, the British had not feared invasion, it would have been completed. Recently, there has again been great interest in the idea of a Channel Tunnel. If it is built, it will connect Britain to Europe for the first time in history.
一、词法分析 (Morphology)
1.1 核心词汇词类标注
| 词汇 | 音标 | 词性 | 本课含义 | 词形变化 |
|---|---|---|---|---|
| tunnel | /ˈtʌnl/ | n./v. | 隧道；挖掘隧道 | tunnels (复数/三单), tunnel(l)ed (过去式) |
| engineer | /ˌendʒɪˈnɪə(r)/ | n. | 工程师 | engineers (复数), engineering (n. 工程学) |
| platform | /ˈplætfɔːm/ | n. | 平台；站台 | platforms (复数) |
| ventilated | /ˈventɪleɪtɪd/ | adj. | 通风的 | ventilate (v.), ventilation (n.) |
| chimney | /ˈtʃɪmni/ | n. | 烟囱 | chimneys (复数) |
| sea-level | /ˈsiː levl/ | n. | 海平面 | 复合名词 |
| suggest | /səˈdʒest/ | v. | 建议；暗示 | suggests (三单), suggested (过去式) |
| invasion | /ɪnˈveɪʒn/ | n. | 入侵；侵略 | invade (v.), invasive (adj.) |
| connect | /kəˈnekt/ | v. | 连接 | connects (三单), connected (过去式), connection (n.) |
1.2 词形变化要点
1.2.1 派生词族
engineer 词族：
engineer (n.) 工程师 → engineering (n.) 工程学
↓
engine (n.) 发动机
↓
ingenious (adj.) 精巧的
ventilate 词族：
ventilate (v.) 使通风 → ventilated (adj.) 通风的
↓
ventilation (n.) 通风系统
↓
ventilator (n.) 通风设备
invasion 词族：
invade (v.) 入侵 → invasion (n.) 入侵
↓
invader (n.) 入侵者
↓
invasive (adj.) 侵略性的
1.2.2 复合词与派生词
| 词汇 | 构成分析 | 含义 |
|---|---|---|
| well-ventilated | well (adv.) + ventilated (adj.) | 通风良好的 |
| sea-level | sea (n.) + level (n.) | 海平面 |
| railway | rail (n.) + way (n.) | 铁路 |
注意：well-ventilated 是副词+过去分词构成的复合形容词，在句中作表语。
1.2.3 动词不规则变化
| 原形 | 过去式 | 过去分词 | 现在分词 | 本课出现 |
|---|---|---|---|---|
| put | put | put | putting | put forward (提出) |
| build | built | built | building | was built (被建造) |
| draw | drew | drawn | drawing | draw in (吸入) |
| fear | feared | feared | fearing | feared (害怕) |
特殊用法：
- put forward = propose（提出）
- put 的过去式、过去分词同形，均为 put
- draw in = pull in（吸入；吸引）
- draw 的过去式为 drew，过去分词为 drawn
二、句法分析 (Syntax)
2.1 全文句型统计
| 句型类别 | 数量 | 占比 | 例句编号 |
|---|---|---|---|
| 简单句 | 3 | 27.3% | S3, S8, S10 |
| 并列句 | 1 | 9.1% | S7 |
| 复合句（含从句） | 7 | 63.6% | S1, S2, S4, S5, S6, S9, S11 |
| 总计 | 11 | 100% | — |
2.2 逐句成分分析
S1: 开篇引入
In 1858, a French engineer, Aime Thome de Gamond, arrived in England with a plan for a twenty-one mile tunnel across the English Channel.
句子结构：简单句
时间状语: In 1858
主语: a French engineer, Aime Thome de Gamond (同位语)
谓语: arrived
地点状语: in England
方式状语: with a plan for a twenty-one mile tunnel across the English Channel
其中: twenty-one mile 作定语修饰 tunnel (注意：mile 用单数)
across the English Channel 介词短语作后置定语修饰 tunnel
语法要点：
- 同位语：Aime Thome de Gamond 是 a French engineer 的同位语，具体说明工程师的名字
- 复合形容词作定语：twenty-one mile 中的 mile 用单数形式（数词+名词构成的复合形容词，名词用单数）
- with 短语作状语，表示”带着……”
S2: 提出想法
He said that it would be possible to build a platform in the centre of the Channel.
句子结构：主从复合句（含宾语从句）
主句:
He │ said │ [that...]
主 │ 谓语 │ 宾语从句
宾语从句:
that │ it │ would be │ possible │ to build a platform in the centre of the Channel
连词 │ 形式主语 │ 谓语 │ 表语 │ 真正主语(不定式短语)
语法要点：
- 宾语从句：that 引导宾语从句作 said 的宾语（口语中 that 可省略，但书面语建议保留）
- 形式主语 it：it would be possible to build… 中，it 是形式主语，真正主语是不定式短语 to build…
- 过去将来时：would be 表示从过去看将来的情况
S3: 平台功能
This platform would serve as a port and a railway station.
句子结构：简单句
主语: This platform
谓语: would serve as
宾语: a port and a railway station
语法要点：
- serve as = act as / function as（用作；充当）
- 过去将来时：would serve 表示从过去视角看将来的用途
S4: 通风方案（虚拟语气-与现在事实相反）
The tunnel would be well-ventilated if tall chimneys were built above sea-level.
句子结构：主从复合句（含条件状语从句）
主句（虚拟语气）:
The tunnel │ would be │ well-ventilated
主语 │ 谓语 │ 表语
条件从句（虚拟语气-与现在相反）:
if │ tall chimneys │ were built │ above sea-level
连词│ 主语 │ 谓语(被动) │ 地点状语
语法要点：
- 虚拟语气-与现在事实相反：
- 从句：if + 主语 + 过去式（were）→ tall chimneys were built
- 主句：主语 + would/could/should/might + 动词原形 → the tunnel would be well-ventilated
- 被动语态：were built 是过去时被动语态的虚拟形式
- 本句为假设性建议：这是 de Gamond 当年提出的设想，属于与当时事实相反的假设
S5: 提出新方案
In 1860, a better plan was put forward by an Englishman, William Low.
句子结构：简单句（被动语态）
时间状语: In 1860
主语: a better plan
谓语: was put forward (一般过去时被动语态)
施事状语: by an Englishman, William Low (同位语)
语法要点：
- 被动语态：was put forward（被提出）
- 动词短语：put forward = propose（提出）
- 同位语：William Low 是 an Englishman 的同位语
S6: 建议建造（建议虚拟语气）
He suggested that a double railway tunnel should be built.
句子结构：主从复合句（含宾语从句-虚拟语气）
主句:
He │ suggested │ [that...]
主 │ 谓语 │ 宾语从句
宾语从句（建议虚拟语气）:
that │ a double railway tunnel │ (should) be built
连词 │ 主语 │ 谓语(被动)
语法要点：
- 建议虚拟语气：suggest + that 从句中，从句用 (should) + 动词原形
- should 可省略，直接用动词原形 be built
- 这是英式英语中非常正式的表达方式
- 被动语态：(should) be built
- 复合形容词作定语：double railway 修饰 tunnel
S7: 原理解释
This would solve the problem of ventilation, for if a train entered this tunnel, it would draw in fresh air behind it.
句子结构：并列复合句（for 连接两个分句）
分句1:
This │ would solve │ the problem of ventilation
主语 │ 谓语 │ 宾语
分句2（含条件状语从句）:
for │ if a train entered this tunnel, it would draw in fresh air behind it
连词│ 原因/解释内容
条件从句: if │ a train │ entered │ this tunnel
连词│ 主语 │ 谓语 │ 宾语
主句: it │ would draw in │ fresh air │ behind it
主语│ 谓语 │ 宾语 │ 地点状语
语法要点：
- for 作并列连词：表示”因为”，连接两个并列分句，对前句进行解释说明
- 条件状语从句-真实语气：if a train entered… it would draw…
- 注意：此句中的 would 表示”必然结果”而非虚拟语气，是”will”的过去式形式
- 从句用一般过去时 entered，主句用 would + 动词原形
- draw in = pull in（吸入）
S8: 工程开始
Forty-two years later a tunnel was actually begun.
句子结构：简单句（被动语态）
时间状语: Forty-two years later
主语: a tunnel
状语: actually（事实上）
谓语: was begun (一般过去时被动语态)
语法要点：
- 被动语态：was begun（被开始）
- actually = in fact（事实上；实际上），用于强调事实与预期的对比
S9: 与过去事实相反的虚拟
If, at the time, the British had not feared invasion, it would have been completed.
句子结构：主从复合句（含条件状语从句-虚拟语气）
条件从句（与过去事实相反）:
if │ the British │ had not feared │ invasion
连词│ 主语 │ 谓语 │ 宾语
插入语: at the time（当时）
主句（虚拟语气）:
it │ would have been │ completed
主语│ 谓语 │ 表语/主语补足语
语法要点：
- 虚拟语气-与过去事实相反：
- 从句：if + 主语 + had done → the British had not feared
- 主句：主语 + would/could/should/might + have done → it would have been completed
- 插入语：at the time（当时），插入在 if 和主语之间
- 被动语态：would have been completed（本来会被完成）
本句涉及语法术语：虚拟语气 | 条件状语从句 | 过去完成时
S10: 现在完成时存在句
Recently, there has again been great interest in the idea of a Channel Tunnel.
句子结构：简单句（存在句）
时间状语: Recently
谓语: there has again been (现在完成时存在句)
主语: great interest in the idea of a Channel Tunnel
状语: again (再次)
语法要点：
- there be 句型的完成式：there has been（已经有/存在过）
- 现在完成时：表示从过去持续到现在的状态
- 主谓一致：interest 是不可数名词，谓语用 has been
S11: 与将来事实相反的虚拟（真实条件句）
If it is built, it will connect Britain to Europe for the first time in history.
句子结构：主从复合句（含条件状语从句）
条件从句（真实条件-将来）:
if │ it │ is built
连词│主语│ 谓语(被动)
主句:
it │ will connect │ Britain │ to Europe │ for the first time in history
主语│ 谓语 │ 宾语 │ 状语(介短) │ 时间状语
语法要点：
- 真实条件句-将来时：if + 一般现在时，主句 + will + 动词原形
- 条件从句用一般现在时 is built 表示将来
- 主句用一般将来时 will connect
- 被动语态：is built（被建造）
- connect A to B = 把 A 连接到 B
- for the first time in history = 历史上首次
本句涉及语法术语：条件状语从句 | 一般将来时 | 被动语态
三、功能语法分析 (Functional Grammar)
3.1 虚拟语气全景分析
本课是新概念英语第二册中虚拟语气类型最丰富的一课，涵盖了三种时间维度的虚拟语气：
3.1.1 与现在事实相反的虚拟（S4）
| 构成要素 | 从句 | 主句 |
|---|---|---|
| 结构 | if + 主语 + 过去式 | 主语 + would + 动词原形 |
| 本课例句 | if tall chimneys were built | the tunnel would be well-ventilated |
| 含义 | 如果现在建造高烟囱（实际当时未建） | 隧道就会通风良好（实际未实现） |
语法说明：
- 这是 de Gamond 在1858年提出的设想，用虚拟语气表示与当时实际情况相反的假设
- 被动语态形式：were + 过去分词
术语链接：与现在事实相反的虚拟语气
3.1.2 与过去事实相反的虚拟（S9）
| 构成要素 | 从句 | 主句 |
|---|---|---|
| 结构 | if + 主语 + had done | 主语 + would have done |
| 本课例句 | if the British had not feared invasion | it would have been completed |
| 含义 | 如果当时英国人没有害怕入侵（实际害怕） | 隧道就已经建成了（实际未完成） |
语法说明：
- 表示对过去已发生事实的相反假设
- 隐含事实：英国人当时确实害怕入侵，所以隧道没有建成
- 被动语态形式：would have been + 过去分词
术语链接：与过去事实相反的虚拟语气 | 过去完成时
3.1.3 与将来事实可能相反的虚拟（S11）
| 构成要素 | 从句 | 主句 |
|---|---|---|
| 结构 | if + 主语 + should do / were to do / 过去式 | 主语 + would + 动词原形 |
| 本课例句 | if it is built（真实条件句） | it will connect Britain to Europe |
| 含义 | 如果隧道被建成（将来有可能发生） | 它将连接英国与欧洲 |
语法说明：
- 本句实际上是真实条件句（第一条件句），而非虚拟语气
- 但在传统语法中，if + 一般现在时表示将来，属于”与将来事实可能相反”的范畴
- 如果用虚拟语气表达：If it should be built / If it were to be built
术语链接：与将来事实相反的虚拟语气 | 真实条件句
3.2 建议虚拟语气（S6）
结构公式：
suggest + that + 主语 + (should) + 动词原形
本课例句：
He suggested that a double railway tunnel (should) be built.
适用范围：
| 动词/名词/形容词 | 例句 |
|---|---|
| suggest（建议） | I suggest that he (should) go. |
| demand（要求） | They demanded that she (should) leave. |
| order（命令） | The officer ordered that the bridge (should) be destroyed. |
| insist（坚持） | He insisted that we (should) accept the gift. |
| necessary（必要的） | It is necessary that he (should) come. |
| important（重要的） | It is important that she (should) know. |
注意事项：
- should 可省略，直接用动词原形（英式正式英语）
- 美式英语中常省略 should，直接用动词原形
- 被动形式：(should) be + 过去分词
3.3 现在完成时存在句（S10）
结构公式：
there + have/has + been + 主语（名词）
本课例句：
Recently, there has again been great interest in the idea of a Channel Tunnel.
时态变化表：
| 时态 | 结构 | 例句 |
|---|---|---|
| 一般现在时 | there is/are | There is a book on the table. |
| 一般过去时 | there was/were | There were many people here yesterday. |
| 现在完成时 | there has/have been | There has been much rain recently. |
| 过去完成时 | there had been | There had been an accident before I came. |
| 将来时 | there will be | There will be a meeting tomorrow. |
本课特点：
- 副词 again 插入在 has 和 been 之间，表示”再次”
- great interest 是不可数名词短语，谓语用 has been
3.4 时间状语 for the first time in history（S11）
结构分析：
for the first time in history
│ └──── 序数词+time ────┘ │
│ 核心 │
└────── 介词短语作时间状语 ──────┘
类似表达：
| 表达 | 含义 |
|---|---|
| for the first time | 首次 |
| for the last time | 最后一次 |
| for the second time | 第二次 |
| in history / in the history of… | 在……历史上 |
| for the first time in one’s life | 在某人一生中首次 |
本课例句：
it will connect Britain to Europe for the first time in history
四、核心语法对比总结
4.1 三种虚拟语气对比
| 类型 | 时间参照 | 从句谓语 | 主句谓语 | 本课例句 |
|---|---|---|---|---|
| 与现在相反 | 现在 | 过去式 (did/were) | would + do | S4: if…were built, would be… |
| 与过去相反 | 过去 | had done | would have done | S9: if…had not feared, would have been completed |
| 与将来相反 | 将来 | should do / were to do / 过去式 | would + do | S11: if…is built, will connect (真实条件) |
4.2 被动语态在虚拟语气中的形式
| 虚拟类型 | 主动形式 | 被动形式 |
|---|---|---|
| 与现在相反 | would do | would be done |
| 与过去相反 | would have done | would have been done |
| 建议虚拟 | (should) do | (should) be done |
4.3 条件句类型总览
| 类型 | 条件从句 | 主句 | 可能性 | 本课 |
|---|---|---|---|---|
| 零条件 | 一般现在时 | 一般现在时 | 100%（真理） | — |
| 第一条件 | 一般现在时 | will + 动词 | 很可能发生 | S11 |
| 第二条件 | 一般过去时 | would + 动词 | 不太可能/假设 | S4 |
| 第三条件 | 过去完成时 | would have done | 过去未发生 | S9 |
五、术语索引
本课涉及的语法术语：
| 术语 | 出现位置 | 说明 |
|---|---|---|
| 虚拟语气 | S4, S6, S9, S11 | 全文核心语法点 |
| 条件状语从句 | S4, S7, S9, S11 | 四种条件句 |
| 宾语从句 | S2, S6 | that引导的宾语从句 |
| 被动语态 | S4, S6, S9, S11 | 各种时态的被动 |
| 存在句 | S10 | there be句型 |
| 现在完成时 | S10 | there has been |
| 过去完成时 | S9 | had not feared |
| 过去将来时 | S2, S3 | would be / would serve |
| 建议虚拟语气 | S6 | suggest that…should be |
| 同位语 | S1, S5 | 人名同位语 |
| 形式主语 | S2 | it作形式主语 |
| 并列句 | S7 | for连接的分句 |
六、课后练习
6.1 虚拟语气填空
用所给动词的正确形式填空：
- If I ______ (be) you, I ______ (accept) the offer.
- If she ______ (study) harder, she ______ (pass) the exam yesterday.
- He suggested that the problem ______ (discuss) at the next meeting.
- If the tunnel ______ (build) now, it ______ (solve) the traffic problem.
答案：
- were; would accept
- had studied; would have passed
- (should) be discussed
- were built; would solve
6.2 句型转换
将下列句子改为虚拟语气：
-
He didn’t know the truth, so he didn’t tell you. → If he ______ ______ the truth, he ______ ______ ______ you.
-
I don’t have enough money, so I can’t buy the car. → If I ______ ______ enough money, I ______ ______ the car.
答案：
- had known; would have told
- had; would buy
学习提示：本课是掌握虚拟语气的经典课文，建议结合三种时间维度的虚拟语气进行对比记忆，特别注意被动语态在虚拟语气中的变化形式。