Unit 4 Section A Grammar Focus 4a--4d单词短语语法强化训练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 Grammar Focus 4a-4d 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 Sahara is the biggest d______ in the world. 2. The Yangtze River is the l______ river in China, about 6,300 kilometres long. 3. The deepest point in the ocean is in the Mariana T______. 4. Mount Qomolangma is one of the greatest w______ of the world. 5. Victoria Falls is one of the most a______ waterfalls on Earth. 6. As we went c______ to the falls, the noise grew louder. 7. The waterfall stretched as f______ as the eye could see. 8. The noise of the water grew l______ and louder as we got near. 9. The Mariana Trench is about 11,000 m______ deep. 10. The Taklimakan Desert has a total a______ of about 337,000 square kilometres. 二、单项选择。 1. — What is the ______ desert in the world?— The Sahara Desert. A. big B. bigger C. biggest D. most big 2. The Yangtze River travels the ______ in China. A. far B. farther C. farthest D. more far 3. The deepest point in the ocean is ______ the Mariana Trench. A. in B. on C. at D. of 4. Mount Qomolangma is one of ______ greatest wonders of the world. A. a B. an C. the D. / 5. As we went closer to the falls, the noise grew ______. A. loud B. louder C. loudest D. more loud 6. Victoria Falls is one of ______ waterfalls in the world. A. amazing B. more amazing C. most amazing D. the most amazing 7. Mount Qomolangma is still growing ______. A. tall B. taller C. tallest D. the tallest 8. The Sahara Desert is about 9,000,000 square kilometres ______ size. A. in B. on C. at D. for 9. Some deep-sea animals can "see" as ______ as others. A. good B. well C. better D. best 10. The East African Rift Valley is about 4,000 miles ______. A. long B. longer C. longest D. the longest 三、用所给词的适当形式填空。 1. The Sahara is the ______ (big) desert in the world. 2. The Yangtze River is the ______ (long) river in China. 3. Mount Qomolangma is one of the ______ (great) wonders of the world. 4. As we went ______ (close) to the falls, the noise grew louder. 5. The noise of the water grew ______ (loud) and louder. 6. Victoria Falls is one of the ______ (amaze) waterfalls in the world. 7. The Yangtze River travels the ______ (far) in China. 8. The deepest point in the ocean is ______ (deep) than 10,000 metres. 9. Mount Qomolangma is still growing ______ (tall). 10. It was the ______ (amaze) experience of our trip to Africa. 四、语法填空。 Last year, my class took a trip to learn about world natural wonders. We learned that the Sahara is 1.______ (big) desert in the world, with an area of about 9,000,000 square kilometres 2.______ size. The Yangtze River in China travels 3.______ (far) than any other river in the country, and it is about 6,300 kilometres long. The deepest point in the ocean is 4.______ the Mariana Trench, which is about 11,000 metres deep. Mount Qomolangma is one of the 5.______ (great) wonders of the world, and it is still growing 6.______ (tall) every year. We also learned about Victoria Falls in Africa. As we went 7.______ (close) to the falls, the noise of the water slowly grew 8.______ (loud) and louder. The waterfall went on for as 9.______ as the eye could see, and it was one of the 10.______ (amaze) sights we had ever seen. 答案与详细解析： 一、 1.desert解析：原文 4a 部分提到 “What is the biggest desert in the world? It is the Sahara Desert.”，句意为 “撒哈拉是世界上最大的沙漠”，因此填desert（沙漠）。 2.longest解析：原文 4a 部分提到 “The Yangtze River travels the farthest in China and is about 6,300 kilometres long.”，长江是中国最长的河流，用 long 的最高级longest。 3. Trench解析：原文 4a 部分提到 “It is in the Mariana Trench.”，Mariana Trench 是专有名词 “马里亚纳海沟”，首字母需大写，填Trench。 4. wonders解析：原文 4a 部分提到 “Mount Qomolangma is one of the greatest wonders of the world.”，one of 后接可数名词复数，因此填wonders（奇观）。 5. amazing解析：原文 4c 部分提到 “Visiting one of the world's most amazing waterfalls was a magical experience.”，修饰 waterfall 用形容词amazing（令人惊叹的）。 6. closer解析：原文 4c 部分提到 “As we went closer to the water, the noise of the falls slowly grew louder.”，表示 “更靠近” 用 close 的比较级closer。 7. far解析：原文 4c 部分提到 “It went on for as far as the eye could see.”，as far as 是固定搭配，意为 “远到……”，填far。 8. louder解析：原文 4c 部分提到 “the noise of the water slowly grew louder and louder”，比较级+and+比较级 表示 “越来越……”，因此填louder。 9. metres解析：原文 4a 部分提到 “It is about 11,000 metres deep.”，大于 1 的数词后接可数名词复数，metre 的复数是metres。 10. area解析：原文 4b 部分提到 “The Taklimakan Desert has a total area of about 337,000 square kilometres.”，have a total area of 是固定搭配，意为 “总面积为……”，填area（面积）。 二、 1. C解析：in the world 是最高级的范围，big 是单音节形容词，最高级为biggest，且形容词最高级前需加 the，故选 C。 2. C解析：in China 是最高级的范围，far 表示 “距离远” 时，最高级为farthest，故选 C。 3. A解析：表示 “在……（内部）” 用介词 in，in the Mariana Trench 意为 “在马里亚纳海沟里”，故选 A。 4. C解析：形容词最高级前需加定冠词 the，one of the greatest wonders 意为 “最伟大的奇观之一”，故选 C。 5. B解析：句意为 “当我们走近瀑布时，噪音变得更大了”，用 loud 的比较级louder表示 “更吵”，故选 B。 6. D解析：one of the + 形容词最高级 + 名词复数 表示 “最…… 之一”，amazing 是多音节形容词，最高级为most amazing，前需加 the，故选 D。 7. B解析：growing taller 表示 “变得更高”，用比较级表示 “逐渐变得更……”，故选 B。 8. A解析：in size 是固定短语，意为 “在面积 / 尺寸上”，故选 A。 9. B解析：as...as 中间用形容词 / 副词原级，修饰动词see用副词 well，故选 B。 10. A解析：表示 “…… 英里长” 用基数词 + miles + long，此处用原级 long，无比较含义，故选 A。 三、 1.biggest解析：in the world 是最高级范围，big 的最高级为biggest。 2. longest解析：in China 是最高级范围，long 的最高级为longest。 3. greatest解析：one of the + 形容词最高级 + 名词复数 结构，great 的最高级为greatest。 4. closer解析：go closer to 表示 “更靠近”，用 close 的比较级closer。 5. louder解析：比较级+and+比较级 表示 “越来越……”，loud 的比较级为louder。 6. most amazing解析：one of the + 形容词最高级 + 名词复数 结构，amazing 是多音节形容词，最高级为most amazing。 7. farthest解析：in China 是最高级范围，far 表示距离远时，最高级为farthest。 8. deeper解析：than 是比较级的标志，deep 的比较级为deeper。 9. taller解析：growing taller 表示 “变得更高”，用比较级表示逐渐变化，填taller。 10. most amazing解析：amazing 的最高级为most amazing。 四、 1.the biggest解析：in the world 是最高级范围，big 的最高级为 biggest，形容词最高级前必须加 the，故填the biggest。 2. in解析：in size 是固定短语，意为 “在面积上”，故填in。 3. farther解析：than 是比较级的标志，far 表示 “距离远” 时，比较级为farther，故填 farther。 4. in解析：表示 “在……（内部）” 用介词 in，in the Mariana Trench 是固定搭配，故填in。 5. greatest解析：one of the + 形容词最高级 + 名词复数 结构，great 的最高级为greatest，故填 greatest。 6. taller解析：growing taller 表示 “变得更高”，用比较级表示逐渐变化，故填taller。 7. closer解析：go closer to 表示 “更靠近”，用 close 的比较级closer，故填 closer。 8. louder解析：比较级+and+比较级 表示 “越来越……”，loud 的比较级为louder，故填 louder。 9. far解析：as far as the eye could see 是固定短语，意为 “一望无际”，用原级far，故填 far。 10. most amazing解析：one of the + 形容词最高级 + 名词复数 结构，amazing 的最高级为most amazing，故填 most amazing。 学科网（北京）股份有限公司 $