《2025年教与学课程同步讲练八年级英语上册外研版》

三、词汇运用
将方框中所给词语的适当形式填入短文中,每词仅用一次。
excited,blow,invent,experiment,know
A young boy named Tom was playing in his backyard. He noticed that when he 20. blew a piece of grass,it made a whistling sound. This made him very curious. He wondered why the grass made that sound and if he could create something similar.
Tom started 21. experimenting with different materials. He tried leaves,paper,and even small pieces of wood. None of them worked as well as the grass. But he didn't give up. He kept thinking and trying new things.
One day,while playing with a thin piece of metal,he discovered that if he bent it just right,it could make a loud and clear sound when he blew it. 22. Excitedly,he showed his invention to his friends and family. They were amazed by the simple but clever idea.
Tom's curiosity led him 23. to invent a small whistle. Later,he improved it and even started selling his whistles at the local market. People loved them,and Tom became 24. known as the "Whistle Boy".

答案： 【解析】：
这是一道英语词汇运用题，主要考查学生对词汇的理解和上下文运用能力。题目给出了几个词汇，要求填入短文的空格中，每个词只能用一次。我们需要先理解每个词汇的意思，然后根据短文的语境，选择最合适的词汇填入。
1. 第一个空格前的“he”和空格后的“a piece of grass”提示我们这里需要一个动词，表示他对草做的某个动作。根据给出的词汇，“blow”（吹）最符合语境。
2. 第二个空格前的“started”和空格后的“with different materials”提示我们这里需要一个动名词，表示开始做某事。根据语境，“experiment”（实验）最符合，表示他开始用不同的材料做实验。
3. 第三个空格后的逗号和后面的句子提示我们这里需要一个副词来描述他的情绪。根据语境，“Excited”（兴奋的）最符合，表示他兴奋地向家人和朋友展示他的发明。
4. 第四个空格前的“led him”提示我们这里需要一个介词，构成“lead sb. to...”的结构，表示引导某人做某事。根据语境，“to invent”（发明）最符合，表示他的好奇心引导他发明了一个小哨子。
5. 第五个空格后的“as the 'Whistle Boy'”提示我们这里需要一个形容词，表示他成为了什么样的人。根据语境，“known”（出名的）最符合，表示他因为发明哨子而出名。
【答案】：
20. blew
21. experimenting
22. Excitedly
23. to invent
24. known

四、【原创】语法填空
Benjamin Franklin was a famous American inventor. One of his most important inventions was the lightning rod—25. a simple device which helps protect buildings from lightning strikes.
In the 1700s,people didn't understand much about electricity,but Franklin was curious about it 26. and wanted to learn more. He did many experiments with electricity. One of his famous experiments was 27. flying(fly) a kite during a storm. He tied a metal key to the kite string. 28. When he noticed that electricity from the lightning travelled down the string,he knew lightning was a form of electricity.
Franklin realised that lightning could be 29. dangerous(danger). It often struck tall buildings and caused fires. He thought of a way 30. to protect(protect) buildings. He invented the lightning rod—a metal rod 31. placed(place) on top of a building. The rod was connected 32. to/with the ground with a wire. When lightning struck,the rod would catch the electricity and send it 33. safely(safe) into the ground,preventing fires.
Franklin's invention saved many buildings and lives. Today,lightning rods are still used around the world. Franklin's 34. curiosity(curious)and creativity made the world a safer place.

答案： 【解析】：
这是一道英语语法填空题，主要考查学生对冠词、连词、非谓语动词、形容词、名词等语法知识的掌握和运用能力，同时考查学生对上下文语境的理解。
1. 第25空，考查冠词。“simple device”是可数名词单数，这里表示“一个简单的装置”，用不定冠词a。
2. 第26空，考查连词。“curious about it”和“wanted to learn more”是并列关系，用and连接。
3. 第27空，考查非谓语动词。这里用动名词作表语，说明实验的内容是“在暴风雨中放风筝”，故填flying。
4. 第28空，考查连词。根据语境，这里表示“当他注意到闪电中的电顺着绳子传下来时”，用when引导时间状语从句。
5. 第29空，考查形容词。be动词后接形容词作表语，danger的形容词是dangerous。
6. 第30空，考查非谓语动词。“a way to do sth.”表示“做某事的方法”，用动词不定式作后置定语。
7. 第31空，考查非谓语动词。“a metal rod”和“place”之间是被动关系，用过去分词作后置定语。
8. 第32空，考查介词。“be connected to/with”表示“与……连接”，这里用to或with。
9. 第33空，考查副词。修饰动词“send”用副词safely。
10. 第34空，考查名词。“Franklin's”后接名词，curious的名词是curiosity。
【答案】：
25. a
26. and
27. flying
28. When
29. dangerous
30. to protect
31. placed
32. to/with
33. safely
34. curiosity