Unit4 The wonders of nature 单元语法专项训练-2025-2026学年人教版八年级英语下册

人教版八年级英语下册Unit4 The wonders of nature 单元语法专项训练

满分100分

一、选出不同类的一项（5分）

(   )1. A. glacier  B. canyon  C. phenomenon  D. waterfall

(   )2. A. erupt  B. exist  C. amazing  D. flow

(   )3. A. because  B. though  C. unless  D. therefore

(   )4. A. had discovered B. has been exploring C. will have seen  D. is wondering

(   )5. A. whatever  B. whichever  C. whoever  D. however

二、单项选择题（共15分）

1. The scientists ______ the mysterious deep-sea ecosystem for over a decade and they're still collecting vital data.

 A. study  B. studied  C. have studied  D. have been studying

2. —Could you tell me ______ the ancient rock formations took shape?

—It's estimated to be over 10 million years.

 A. how far  B. how long  C. how often  D. how soon

3. He told his teammates that he _ the rare plant species in the rainforest the following month.

 A. will search for  B. searches for  C. would search for  D. has searched for

4. Before the environmental report was released, the researchers ______ the impact of climate change on glaciers for five years.

 A. studied  B. have studied  C. had studied  D. will study

5. They ______ the source of the underground river since dawn, but the harsh terrain keeps delaying their progress.

 A. explore  B. explored  C. have explored  D. have been exploring

6. “We have never encountered such a spectacular natural wonder,” they exclaimed. They exclaimed that they ______ never ______ such a spectacular natural wonder.

 A. have; encountered  B. had; encountered  C. were; encountering  D. would; encounter

7. I doubt ___ the newly found cave is safe for tourists to visit without professional guidance.

 A. that  B. if  C. what  D. which

8. Our geography teacher reminded us that the Pacific Ocean ____ the largest ocean on Earth.

 A. is  B. was  C. will be  D. has been

9. For the past eight years, the team ______ efforts to protect the endangered species in the nature reserve.

 A. makes  B. made  C. has made  D. has been making

10.            “I will submit the research paper on natural wonders next week,” she said. She said that she ______ the research paper on natural wonders the next week.

 A. submits  B. submitted  C. will submit  D. would submit

11.            Do you know ______ ancient people managed to build such magnificent structures in harmony with nature?

 A. when  B. how  C. what  D. where

12.            The guide asked if we ______ any experience in hiking through mountainous areas before.

 A. have  B. had  C. will have  D. has had

13.            Over the past century, the global temperature ______ significantly, affecting many natural wonders.

 A. rises  B. rose  C. has risen  D. is rising

14.            I'm curious ______ the Northern Lights usually appear in the polar regions.

 A. why  B. that  C. which  D. who

15.            She has been ______ the unique rock patterns in the desert for hours, trying to capture their beauty in her sketchbook.

 A. looking up  B. looking after  C. looking for  D. looking at

三、用括号里单词的正确形式填空（共20分）

1. The explorer ______ (investigate) the origin of the volcanic island for four years and is about to publish his findings.
2. I wonder if the team ______ (complete) the survey of the coral reef by the end of this year.
3. The traveler said he ______ (visit) seven natural wonders around the world before he came to China.
4. They ______ (monitor) the water level of the lake since the start of the rainy season.
5. Do you know ______ (whose) camera was used to take these amazing photos of the waterfall?
6. He asked me how long I ______ (be) fascinated by the mysteries of nature.

7. The teacher told us that the force of gravity ______ (keep) the planets in their orbits.
8. She has been ______ (wait) for the perfect moment to take a photo of the sunrise over the mountain.
9. “I will organize a volunteer activity to clean up the natural reserve,” Mike said. Mike said that he ______ (organize) a volunteer activity to clean up the natural reserve.
10.            I don't know ______ (when) the next total solar eclipse will occur in our region.
11.            The researchers ______ (work) on a project to preserve the ancient forest all year round.
12.            He asked me ______ (if) I had ever witnessed the formation of a rainbow after a thunderstorm.
13.            She said she ______ (can) describe the beauty of the snow-capped mountains in great detail.
14.            I have been ______ (learn) about different types of natural disasters and their impacts since last semester.
15.            Do you know ______ (where) the deepest freshwater lake in Asia is situated?
16.            By the time we arrived at the national park, the rangers ______ (already/guide) three groups of visitors through the forest.
17.            The reporter asked the expert what steps we ______ (take) to prevent the damage to natural wonders.
18.            They ______ (not find) the rare bird species in the wetland yet, but they are still searching.
19.            “I am studying the migration patterns of whales,” the marine biologist said. The marine biologist said that he ______ (study) the migration patterns of whales.
20.            Could you tell me ______ (how) we can balance economic development with the protection of natural wonders?

四、按要求改写句子（共20分）

1. She said, “I have finished my research on the Amazon rainforest.”（改为间接引语）

She said that ______ ______ finished ______ research on the Amazon rainforest.

2. I want to know. Will they launch the expedition to the Arctic next spring?

（合并为宾语从句）

I want to know ______ they ______ ______ the expedition to the Arctic next spring.

3. The students have been preparing for the “Natural Wonders” exhibition for two weeks.（对划线部分提问）