从方框中选出恰当的关系代词填空，使句子通顺、意义完整。
which that who
Music is an important part of Chinese culture. It has a history 11. goes back thousands of years.
Many musicians 12. love traditional music keep it alive today.
Erhu is a special instrument 13. is famous around the world. The beautiful music 14. it plays touches many people's hearts.
There are many songs 15. are full of Chinese feelings. Some composers 16. work hard write great pieces. The performances 17. they give are wonderful.
Folk music is the type of music 18. I like best. It tells stories 19. are warm and true. We should value the art 20. connects us to our culture.

11. that/which
12. who/that
13. which/that
14. that/which
15. which/that
16. who/that
17. that/which
18. that/which
19. which/that
20. that/which

本题考查定语从句关系代词that、who、which的基础用法：who用于指代人，在定语从句中可作主语或宾语；which用于指代物，在定语从句中可作主语或宾语；that既可以指代人也可以指代物，在定语从句中可作主语或宾语，多数场景下可与对应的who、which互换。我们根据每句先行词的属性判断合适的关系代词即可。

一 重点单词
1. piano(n.)钢琴 → (n.)钢琴家;钢琴演奏者
2. gift(n.)礼物;天赋 → (adj.)有天赋的
3. wide(adj.)宽的;广泛的 → (v.)拓宽;(使)拓展
4. value(n. & v.)价值;重视 → (adj.)宝贵的;贵重的
5. proud(adj.)自豪的 → (adv.)自豪地;壮观地
6. profession(n.)职业;行业 → (adj.)专业的;职业的
7. contribute(v.)贡献;捐助 → (n.)贡献;捐款
8. outdo(v.)胜过 → (过去式)→ (过去分词)

1. pianist
2. gifted
3. widen
4. valuable
5. proudly
6. professional
7. contribution
8. outdid；outdone

本题考查九年级上册要求掌握的英语词形转换规则，涵盖派生词变形、不规则动词变形：
1. 名词piano（钢琴）对应的表示职业“钢琴家”的名词，在词尾加后缀-ist得到pianist；
2. 名词gift（天赋）变为形容词“有天赋的”，加后缀-ed得到gifted；
3. 形容词wide（宽的）变动词“拓宽”，在词尾加表“使、变得”含义的后缀-en，得到widen；
4. 名词/动词value（价值、重视）变为形容词“宝贵的”，去掉词尾e加后缀-able得到valuable；
5. 形容词proud（自豪的）变为副词，直接加后缀-ly得到proudly；
6. 名词profession（职业）变为形容词“专业的”，变形得到professional；
7. 动词contribute（贡献）变为名词“贡献”，变形得到contribution；
8. 不规则动词outdo的过去式为outdid，过去分词为outdone。