Unit 4 The Wonders of Nature Section A Grammar focus 练习-2025-2026学年人教版八年级下册英语

人教版八年级下册英语Unit 4 The Wonders of Nature Section A Grammar Focus 练习 Ⅰ. 根据句意用所给单词的适当形式填空。 1) Look at the twin brothers. Tom is _______________ (thin) of the two. 2) The _______________ (hard) you work at your lessons, the _______________ (good) grades you will get. 3) There are _______________ (few) students in the classroom today than yesterday because many are ill. 4) — You are driving too fast! Can you drive a bit _______________ (carefully)? — Sorry, I will slow down. 5) The Caspian Sea is the _______________ (large) inland body of water in the world. ( cubic / pool / experience / appear / environment / miles / total / noise / squares )Ⅱ. 根据句意从方框中选出正确的单词填空。(有两个多余选项) 1. Please don't swim in the _______________ alone. It's deep and dangerous. 2. After the heavy rain, a beautiful rainbow _______________ in the sky. 3. The _______________ of China is about 9.6 million square kilometers. 4. The library is a quiet place. Please keep down the _______________. 5. Climbing Mount Qomolangma was a dangerous but exciting _______________ for the team. 6. The new swimming hall holds 5,000 _______________ meters of water. 7. My grandparents live in a small village about ten _______________ away from the city center. Ⅲ. 综合填空。 Li Wei has loved pandas since he was a child. He saw his first panda 1. _______________ he visited the Chengdu Research Base at the age of five. "They were so cute and lazy," he says. "I knew then that I wanted to protect them." _______________ (follow) his dream, Li Wei studied biology in university. After he 3. _______________ (graduate), he became a panda keeper. His job is not easy. Every day, he has to clean the enclosures and prepare fresh bamboo. It can be 4. _______________ (tire), but seeing the pandas eat happily makes him feel proud. Feeding the pandas is one of the 5. _______________ (important) parts of his work. An adult panda can eat up to 30 kilograms of bamboo a day! Li Wei also watches their health closely. He is amazed by how smart they are. He can teach them to recognize their names and even check their own 6. _______________ (tooth) by opening their mouths. Li Wei not only cares for the pandas in the base, 7. _______________ also works to protect their natural homes. He knows that if the forests disappear, the pandas will 8. _______________ (appear) too. So he joins teams to plant trees and stop illegal hunting. Besides, he raises money 9. _______________ (help) the Panda Protection Fund. "Being with pandas is my dream come true," Li Wei says. "I hope everyone can help us make sure these black-and-white 10. _______________ (treasure) will live on forever." 参考答案与解析 Ⅰ. 词形转换 (Grammar Focus) the thinner 解析： 两者（twins）之间比较，用 "the + 比较级"。thin 双写 n 加 er。 harder; better 解析： "The + 比较级..., the + 比较级..." 句型，表示“越...就越...”。hard -> harder, good -> better。 fewer 解析： 有 than，用比较级。students 是可数名词复数，many/few 修饰可数，故用 few -> fewer。 more carefully 解析： 修饰动词 drive，且 bit 暗示程度比较。carefully 是多音节副词，比较级前加 more。 largest 解析： in the world 提示范围最大，用最高级。large 去 e 加 st。 Ⅱ. 选词填空 (Vocabulary) pool (swimming pool 游泳池，或指深水潭) appeared (彩虹“出现”在天空。根据语境可用过去式 appeared，若方框只给原形则填 appear，但句中无时态标志，通常叙述事实用一般现在时 appears，叙述过去经历用 appeared。此处填 appears 或 appeared 均符合逻辑，考虑到方框是原形，若需变形则填 appeared 或 appears。注：原题风格通常需要根据时态变形。这里填 appears (客观现象) 或 appeared (特定某次雨后)。) -> 修正：根据原题第2题 "rainbows ___"，通常填 appear (一般现在时表自然规律) 或 appeared。 total (total area 总面积) noise (keep down the noise 降低噪音) experience (an exciting experience 一次激动人心的经历) cubic (cubic meters 立方米) miles (five miles away 五英里远，复数) (多余选项: environment, squares) Ⅲ. 综合填空 (Story Cloze) when (当他五岁时，时间状语从句) To follow (为了追随梦想，不定式作目的状语。或者 Following 作伴随/原因状语也可，但 To follow 表目的更常见于此类励志故事开头) -> 注：若考查非谓语动词作状语，Following (跟随/本着) 也很通顺。参考原图风格，此处填 To follow 或 Following 均可，建议 To follow。 graduated (after 引导的时间状语从句，发生在过去，用过去式) tiring (修饰物/工作，用 -ing 结尾形容词，意为“令人疲惫的”) most important (one of the + 最高级，important 是多音节，加 most) teeth (tooth 的复数是 teeth，检查它们的牙齿) but (not only... but also... 固定搭配) disappear (如果森林消失，熊猫也会“消失”。appear 的反义词 disappear，will 后接原形) to help (raise money to do sth. 筹钱去做某事，不定式表目的) treasures (these 指示代词修饰复数，treasure 变复数 treasures，喻指国宝) 学科网（北京）股份有限公司 $