Unit 3 Sea Exploration 阅读语言点精讲导学案 2026-2027学年高中英语人教版选择性必修第四册

选择性必修四　Unit 3　Sea Exploration

阅读语言点精讲导学案

长句取自 Reading 原文，例句与练习用武汉场景。

一、阅读里的四个长句

1. A trading route across the sea was also extended along the coasts of the Indian Ocean, centred around Ceylon (now Sri Lanka).

主干是 A trading route was extended，路线被延伸。

extend 是“延伸”，主语是 route，路线自己不会延伸，所以用被动 was extended。

centred around 是过去分词短语，补充说明路线的中心；be centred around/on 意思是以……为中心。

coast 用复数，along the coasts of 指印度洋沿岸多处海岸。

例句：The 100-kilometre East Lake Greenway was extended along the northern shore of the lake, centred on the old forest park that was once a restricted area for military purposes.

2. Here, merchants from China and many other places met to negotiate trade deals, which also led to more awareness of each other's cultures.

主干就是 merchants met。to negotiate trade deals 是不定式作目的状语。

关键在于 which 引导的是非限制性定语从句，前面有逗号，which 指代的是“商人洽谈贸易”这整件事，不是指 deals。lead to 后面接名词，意思是导致、带来；awareness of 是对……的了解。

例句：Every morning, traders from all over Hubei Province gather at Hanzheng Street to negotiate wholesale deals on clothing and small electronics, which has also turned this old street into a bustling commercial destination.

3. Although China withdrew from further expeditions after 1433, these land and sea routes remained active channels between other cultures for centuries.

although 引导让步从句，主句前面别加 but。

withdraw from 是“从……退出”；further expeditions 指后续的远航。

remain 在这里作系动词，后面接名词 active channels，“仍然是……”；for centuries 说明持续了多久。

例句：Although the real estate developer withdrew from the controversial lakeside residential project after massive public protest, the land along East Lake remained a protected ecological area.

4. Hundreds of years on, and with the latest technology in hand, the need to trade and the desire to enhance relationships will drive China to reach out across the sea far into the future.

主干是 the need and the desire will drive China to reach out，两个主语并列。

Hundreds of years on 是数百年过去，on 表示“往后、继续”。

with 复合结构是 with + 宾语 + 介词短语 in hand，意思是“有……在手”。

drive sb to do sth 是促使某人做某事；to trade 和 to enhance 分别修饰 the need 与 the desire。

例句：With the Yangluo Free Trade Port officially opened last year, the need to reduce cargo handling time and the desire to strengthen trade with Southeast Asian countries will drive Wuhan to expand its inland shipping routes far into the future.

二、核心词

词条	必背搭配	例句	词形
extend vt. 扩展；延长 vi. 延伸	extend sth to；extend into；extend a welcome	The local government has announced that the East Lake Greenway will be extended by another 15 kilometres next year, reaching all the way to the Huazhong University of Science and Technology campus.	extension n.；extensive adj.
negotiate vt. 商定 vi. 谈判	negotiate with sb；negotiate over sth；under negotiation	Shop owners along Jiqing Street are still negotiating with the district government over the amount of compensation they will receive when the old street is renovated into a cultural tourism zone.	negotiation n.
withdraw vi. & vt. 撤回；撤离	withdraw from；withdraw sth from	After thousands of residents signed a petition protesting against the construction of a chemical plant near the drinking water source, the company immediately withdrew its application for the project.	withdrawal n.
mixture n. 混合；混合物	a mixture of；mix A with B	The weekend market at Hankou River Beach is a vivid mixture of elderly people doing morning exercises, young couples taking wedding photos, and street performers playing folk music.	mix v.
mercy n. 仁慈；宽恕	without mercy；have mercy on sb；at the mercy of	When the sudden flood hit the riverbank village, the small fishing boats that were not pulled ashore were completely at the mercy of the fast-rising water and strong currents.	merciful adj.
possession	be in possession of；be in	The collection of late	possess vt.