2026年自主高效练八年级英语下册外研版评议教辅第40页答案
六、语法填空
Mount Qomolangma is the world's highest mountain above sea level. But did you know that 38.
its
(it) height is growing? Scientists say the huge mountain grows by as much as two millimetres(毫米) every year. Two millimetres is very tiny, 39.
but
the change will be big over time.
In 40.
a
recent study, researchers have suggested that Qomolangma is growing because of a nearby river, the Arun. This powerful river 41.
runs
(run) along the Himalayas and washes away rocks and soil. Then a huge, deep gorge(峡谷)42.
is created
(create). As there is now less ground material left in that area, the crust(板块) becomes lighter as well. This allows the crusts 43.
to push
(push) against each other and go upwards. Many 44.
years
(year) later, the whole process raises the height of the land—even big, heavy mountains.
45.
What
makes Qomolangma grow so rapidly? Researchers discovered that with a lot more water going through the Arun, the river would wash away more rocks and soil. As a result, the gorge will become even 46.
bigger
(big) in a shorter time, causing Qomolangma to grow more quickly. It is 47.
really
(real) amazing to think about how nature can change the world's highest mountain!
词汇拓展 Can you guess the part of speech and the meaning of the underlined words in the passage(s) above?
48. declare:
v. 宣布

49. geology:
n. 地质学

答案

38. its
39. but 40. a 41. runs 42. is created
43. to push 44. years 45. What
46. bigger 47. really 48. v. 宣布
49. n. 地质学

解析

【分析】
要解答本题,需结合句子结构、语法规则及上下文逻辑逐一分析:
1. 38题:空格后是名词height,需用形容词性物主代词修饰,对应it的形容词性物主代词its;
2. 39题:前句“两毫米很小”与后句“长期变化会很大”为转折关系,需用转折连词but;
3. 40题:study是可数名词单数,表泛指“一个近期的研究”,需用不定冠词a;
4. 41题:主语the river是第三人称单数,全文为一般现在时,谓语动词用runs;
5. 42题:主语gorge与create是被动关系,需用一般现在时的被动语态is created;
6. 43题:固定搭配allow sth to do sth,需填不定式to push;
7. 44题:many修饰可数名词复数,year变复数为years;
8. 45题:句子缺主语,询问“什么让珠峰快速生长”,用疑问词What;
9. 46题:even修饰形容词比较级,big的比较级为bigger;
10. 47题:修饰形容词amazing需用副词,real的副词形式为really;
11. 48、49题:根据词汇积累,declare是动词“宣布”,geology是名词“地质学”。
【解析】
38. 空格后为名词height,需用形容词性物主代词修饰,故填its;
39. 前后句为转折关系,需用转折连词but,故填but;
40. 此处表泛指“一个近期的研究”,study为可数名词单数,故填不定冠词a;
41. 主语the river是第三人称单数,全文时态为一般现在时,谓语动词用runs,故填runs;
42. 主语gorge与动词create是被动关系,需用一般现在时的被动语态(is+过去分词),故填is created;
43. 固定搭配allow sth to do sth(允许某物做某事),故填to push;
44. many后接可数名词复数,year的复数形式为years,故填years;
45. 句子缺少主语,结合句意“什么让珠峰快速生长”,需用疑问词What,故填What;
46. even修饰形容词比较级,big的比较级为bigger,故填bigger;
47. 修饰形容词amazing需用副词,real的副词形式为really,故填really;
48. 根据词汇知识,declare为动词,意为“宣布”;
49. 根据词汇知识,geology为名词,意为“地质学”。
【答案】
38. its 39. but 40. a 41. runs 42. is created 43. to push 44. years 45. What 46. bigger 47. really 48. v. 宣布 49. n. 地质学
【知识点】
英语语法运用、词汇拓展
【点评】
本题结合语法填空与词汇拓展,侧重考察核心基础语法(代词、连词、动词形式等)及常用词汇,题目难度适中,适合巩固英语基础。
【难度系数】
0.7