2026年新坐标同步练习八年级英语下册人教版青海专用第43页答案
4. Long ago, the Sahara Desert
C
trade routes connect Africa and the Mediterranean.

A.help
B.helps
C.helped
D.helping

答案

4.C

解析

【分析】首先定位句子的时间状语“Long ago”,明确这是一般过去时的典型标志,句子谓语动词需使用过去式。接着分析各选项的动词形式:A为动词原形,B为一般现在时第三人称单数形式,C为过去式,D为现在分词(不能单独作谓语),据此匹配正确选项。
【解析】句子时间状语“Long ago”(很久以前)表明动作发生在过去,需使用一般过去时。逐一分析选项:A项help是动词原形,用于一般现在时主语非第三人称单数或情态动词后,不符合时态要求;B项helps是一般现在时第三人称单数形式,虽主语Sahara Desert是单数,但时间为过去,排除;C项helped是help的过去式,符合一般过去时的谓语动词要求,可作句子谓语;D项helping是现在分词,不能单独作谓语,需与be动词构成进行时态,排除。因此正确答案为C。
【答案】C
【知识点】一般过去时;动词时态辨析
【点评】本题考查英语动词时态的基础辨析,核心是通过时间状语确定时态,属于简单的语法题,适合基础阶段学生练习。
【难度系数】0.8
5. —Do you know why it's
A
the Yellow River?
—Because some parts of it carry brown and yellow earth.

A.called
B.told
C.said
D.spoken

答案

5.A

解析

【分析】
本题考查被动语态的用法及动词词义辨析。解题思路:首先分析句子结构,问句是why引导的宾语从句,结合语境可知从句需用被动语态(表示“被叫做”);再结合答语的语义,判断空格处需填表示“叫做”的动词过去分词,最后辨析各选项动词的含义排除错误选项。
【解析】
1. 句子结构分析:问句中it指代黄河,与动词是被动关系,需用“be + 过去分词”的被动结构。
2. 语义判断:答语说明黄河部分河段携带棕黄色泥土,对应问句是问“为什么它被叫做黄河”,“叫做”对应的动词是call,其过去分词为called,符合语境。
3. 选项排除:B项told(告诉)、C项said(说)、D项spoken(讲,常接语言)均不符合语义,只有A项正确。
【答案】
A
【知识点】
被动语态;动词词义辨析
【点评】
本题为基础英语题,结合语境考查被动语态和常用动词的词义辨析,需掌握被动结构及常见动词的用法,难度较低。
【难度系数】
0.8
Ⅴ.完成句子。
1. We should protect rivers by all means.
How
should
we protect rivers?
2. Both the Nile and the Yellow River helped ancient civilizations develop.
Neither
the Nile
nor
the Yellow River helped ancient civilizations develop.
3. The Yangtze River travels the farthest in China.
Does
the Yangtze River
travel
the farthest in China?
4. longest, Africa, the, Nile, is, river, the, in(.)
The Nile is the longest river in Africa.

5. The Yangtze River is about 6,300 kilometres long.
The Yangtze River is about 6,300 kilometres
in
length
.

答案

Ⅴ.1.How should 2.Neither;nor 3.Does;
travel 4.The Nile is the longest river in
Africa. 5.in length

解析

【分析】本题为英语句型转换与应用类题目,需根据每小题的具体要求(改为特殊疑问句、同义转换、连词成句等),结合对应语法知识点逐步解题:1. 对方式状语提问用特殊疑问词how,有情态动词的句子变疑问句时将情态动词提前;2. 结合连词用法完成结构转换;3. 对主语提问时,根据时态和主语人称确定助动词,谓语动词用原形;4. 连词成句需先找主语、谓语,再按修饰关系排列;5. 同义替换需掌握表示“长度”的固定短语。
【解析】1. 划线部分by all means是方式状语,对方式提问用how;原句含情态动词should,变疑问句时将should提前,主语we保留,故填How should。2. 结合句型转换要求,用Neither...nor完成对应结构转换。3. 划线部分是主语The Yangtze River,原句为一般现在时,主语是第三人称单数,需借助助动词does,谓语动词travel用原形,故填Does;travel。4. 连词成句:确定主语为The Nile,谓语为is,表语为the longest river,地点状语为in Africa,组合成完整句子。5. 表示“多长”的同义表达,long对应的固定短语是in length,故填in length。
【答案】Ⅴ.1.How should 2.Neither;nor 3.Does;travel 4.The Nile is the longest river in Africa. 5.in length
【知识点】特殊疑问句构成、连词用法、同义短语转换
【点评】本题考查初中英语基础句型转换与应用,涵盖特殊疑问词、连词、助动词及固定短语的运用,题型典型,侧重基础知识点的落实,适合巩固练习。
【难度系数】0.6
Ⅵ.填一词,补对话。(两小题首字母已给出,请将完整的单词填写在横线上)
A:Hi, Lily! You just got back from a trip. How was visiting the West Lake?
B:1. W
onderful
! The West Lake is beside the Qiantang River. Do you know about China's rivers?
A:Sure! The Yangtze River is the longest. How 2.
long
is it?
B:It's about 6,300 km. And the Yellow River is the second-longest, 5,464 km. By the way, why is the Qiantang River not as famous as them in history?
A:Well, the Yangtze and Yellow Rivers helped ancient civilizations a lot. They are like our "mother rivers".
B:I see. I also like foreign rivers. The Nile in Africa is amazing.
A:Yes! The Nile is 6,671 km. It's really important for Egypt's 3. d
evelopment
.
B:Rivers are so great. Both Chinese and foreign rivers are important for 4.
humans
. We should 5.
protect
them.
A:Exactly! Even small rivers, like some near our city, play a role in the ecosystem.

答案

Ⅵ.1.Wonderful 2.long 3.development
4.humans 5.protect

解析

【分析】
1. 第1空:A询问西湖之旅的感受,需用形容词作答,首字母为W,结合语境“很棒的”,确定填Wonderful。
2. 第2空:下文回答是河流长度,此处需用疑问词组询问长度,对应how long,故填long。
3. 第3空:尼罗河对埃及的作用,首字母为d,结合常识和语境,河流促进埃及发展,填development。
4. 第4空:前文提到中外河流是“母亲河”,可知对人类重要,填humans。
5. 第5空:河流很重要,我们应采取的行动是保护,填protect。
【解析】
1. 第1空:根据问句“How was visiting the West Lake?”,需用形容词回答旅行感受,首字母W,故填Wonderful。
2. 第2空:由答语“It's about 6,300 km.”可知,此处询问长度,用how long,故填long。
3. 第3空:结合语境“尼罗河对埃及的……”及首字母d,可知是“发展”,填development。
4. 第4空:根据前文“母亲河”的比喻,中外河流对人类重要,填humans。
5. 第5空:由“Rivers are so great.”可知,我们应保护河流,填protect。
【答案】
1.Wonderful 2.long 3.development 4.humans 5.protect
【知识点】
形容词运用、疑问词搭配、词义理解
【点评】
本题为补全对话填空题,结合语境与首字母提示考查基础词汇,话题贴近生活,注重词汇在实际语境中的运用,难度适中。
【难度系数】
0.6
Ⅶ.综合填空。(用方框中或括号内词的适当形式填空。两处需根据音标写出准确单词,每空1词,限用一次。)

wait wonder exist amazing
Nature is full of amazing wonders. From high mountains to deep oceans, there are many beautiful things 1.
waiting
for us to discover. These wonders 2.
exist
because of natural forces over millions of years.
The Grand Canyon in the US is one of the most famous natural wonders. It is very beautiful with its 3.
colourful
/'kʌləfl/ rocks and deep valleys. Every year, millions of tourists visit it to enjoy its beauty.
Last summer, I went to visit a waterfall with my family. When I saw the water 4.
falling
(fall) from the top of the mountain, I was shocked by its power. The sound of the water was so loud that I could hardly hear others talking. We took many photos and 5.
enjoyed
(enjoy) the fresh air there.
Scientists say that nature also 6.
provides
(provide) us with many resources. We should protect nature and use these resources wisely. If we destroy nature, we will lose these wonderful things forever.
The Northern Lights is another 7.
amazing
natural wonder. It looks like a colourful curtain in the sky. Many people travel to the north 8.
to see
(see) this wonderful sight.
Nature is our home. We should love and protect it. Let's explore the 9.
wonders
of nature and enjoy the 10.
beauty
/bju:ti/ it brings to us.
素养提升·学以致用

答案

1.waiting 2.exist 3.colourful 4.falling 5.enjoyed 6.provides 7.amazing 8.to see 9.wonders 10.beauty

解析

【分析】
首先通读全文,明确文章围绕自然奇迹展开,需结合句子结构确定所需词性,再结合方框词汇、括号词汇、音标及语法规则(非谓语、时态、固定搭配)选择并调整词形,同时满足“方框词汇限用一次”的要求。
【解析】
1. 空1:句子为there be句型,名词things后需非谓语,things与wait是主动关系,用现在分词waiting,表“等待我们发现的美丽事物”,故选wait的现在分词形式。
2. 空2:主语wonders是复数,句子为一般现在时,谓语动词用原形exist,表“这些奇迹因自然力量存在”。
3. 空3:根据音标/'kʌləfl/,对应形容词colourful,修饰名词rocks,表“色彩斑斓的岩石”。
4. 空4:固定搭配see sth doing sth(看到某物正在做某事),此处指看到水正落下,用fall的现在分词falling。
5. 空5:and连接并列谓语,前面took为过去式,故enjoy用过去式enjoyed,保持时态一致。
6. 空6:主语nature是第三人称单数,一般现在时,谓语动词用provide的第三人称单数形式provides,表“自然提供资源”。
7. 空7:修饰名词wonder需形容词,方框内amazing符合,表“另一个令人惊叹的自然奇迹”。
8. 空8:表目的用动词不定式to see,表“人们去北方看奇妙景象”。
9. 空9:explore后接名词,方框内wonder符合,表“探索自然的奥秘”。
10. 空10:根据音标/bju:ti/,对应名词beauty,表“享受自然带来的美”。
【答案】
1. waiting 2. exist 3. colourful 4. falling 5. enjoyed 6. provides 7. amazing 8. to see 9. wonder 10. beauty
【知识点】
非谓语动词、动词时态、音标词汇
【点评】
本题考查英语综合填空,需结合语境、语法规则及音标知识,侧重基础词汇运用,难度适中。
【难度系数】
0.5