Unit 4 Section A 1a-1d 同步练习 2025-2026学年人教版英语八年级下册

人教版英语八年级下册 Unit 4 Section A (1a-1d) 单词短语语法强化训练

一、根据句意及首字母提示补全句子。

1. The N______ River is the longest river in the world.

2. M______ Q______ is the highest mountain in the world.

3. The S______ Desert is the largest hot desert in the world.

4. The D______ S______ is the lowest place on earth.

5. The M______ T______ is the deepest place in the ocean.

6. The A______ Falls is the highest waterfall in the world.

7. The river is about 6,670 k______ long.

8. The desert covers a large a______ of land.

9. The mountain is 8,848.86 m______ high.

10. The sea is 416 metres below s______ level.

二、单项选择。

1. Mount Qomolangma is ______ highest mountain in the world.

A. A  B. an  C. the  D. /

2. The Sahara Desert is the largest desert ______ the world.

A. In  B. on  C. at  D. for

3. The Dead Sea is about 416 metres ______ sea level.

A. Below  B. under  C. over  D. above

4. The Mariana Trench is the deepest place ______ the ocean.

A. On  B. in  C. at  D. for

5. Which of the following is the longest river in the world?

A. Nile River  B. Yangtze River  C. Amazon River  D. Yellow River

6. The area of the Sahara Desert is about 9,000,000 square kilometres. Here “square kilometres” means ______.

A. 千米  B. 平方千米  C. 平方米  D. 公里

7. Mount Qomolangma is 8,848.86 metres ______.

A. High  B. tall  C. long  D. deep

8. The Mariana Trench is about 11,000 metres ______.

A. High  B. tall  C. long  D. deep

9. —______ is the Dead Sea?—It’s about 416 metres below sea level.

A. How high  B. How low  C. How long  D. How deep

10. —______ is the Sahara Desert?—It’s about 9,000,000 square kilometres in size.

A. How big  B. How long  C. How high  D. How deep

三、用所给词的适当形式填空。

1. The Nile River is the ______ (long) river in the world.

2. Mount Qomolangma is the ______ (high) mountain in the world.

3. The Sahara Desert is the ______ (large) hot desert in the world.

4. The Dead Sea is the ______ (low) place on earth.

5. The Mariana Trench is the ______ (deep) place in the ocean.

6. Angel Falls is the ______ (high) waterfall in the world.

7. The river is about 6,670 ______ (kilometre) long.

8. The desert is about 9,000,000 square ______ (kilometre) in size.

9. The mountain is 8,848.86 ______ (metre) high.

10. The sea is 416 ______ (metre) below sea level.

四、语法填空。

The world is full of amazing natural wonders. Let’s learn about some of them. Mount Qomolangma is 1.______ highest mountain in the world. It is 2.______ (metre) high. The Sahara Desert is the largest hot desert 3.______ the world. It is about 9,000,000 square kilometres 4.______ size. The Dead Sea is the lowest place 5.______ earth. Its surface is 416 metres 6.______ sea level. The Mariana Trench is the deepest place 7.______ the ocean. It is about 11,000 metres 8.______ (deep). The Nile River is the

longest river in the world. It is about 6,670 kilometres 9.______ (long). Angel Falls is the highest waterfall in the world. These places are all amazing. We should protect our nature 10.______ learn more about it.

 

 参考答案与超详细解析 ：

一、

1. Nile解析：本课核心地理名词，Nile River 尼罗河，是世界上最长的河流。

2. Mount Qomolangma解析：本课核心地理名词，珠穆朗玛峰，是世界上最高的山峰。

3. Sahara解析：本课核心地理名词，Sahara Desert 撒哈拉沙漠，是世界上最大的热沙漠。

4. Dead Sea解析：本课核心地理名词，死海，是地球上最低的地方。

5. Mariana Trench解析：本课核心地理名词，马里亚纳海沟，是海洋中最深的地方。

6. Angel解析：本课核心地理名词，Angel Falls 安赫尔瀑布，是世界上最高的瀑布。

7. kilometres解析：长度单位，kilometre 千米，前面有数字 6,670，用复数形式 kilometres。

8. area解析：area 表示 “面积、区域”，符合 “沙漠覆盖大片土地” 的语境。

9. metres解析：高度单位，metre 米，前面有数字 8,848.86，用复数形式 metres。 10. sea解析：固定搭配 sea level 意为 “海平面”，是本课重点短语。

二、

1. C. the解析：形容词最高级（highest）前必须加定冠词 the，这是形容词最高级的固定用法。

2. A. in解析：固定搭配 in the world 意为 “在世界上”，是本课描述地理事物的常用短语。