I like music that I can dance to教案
i like music that i can dance to. 我喜歡可以隨之跳舞的音樂。
music作先行詞，that i can dance to 是定語從句修飾music，其中，that是關系代詞引導定語從句
i prefer singers who can write their own songs. 我喜愛能自己寫歌的歌星。
singers作先行詞，who can write their own songs 是定語從句修飾singers，其中，who是關系代詞。
定語從句是高中的一個重要語法項目，這里就各關系代詞舉例如下：
that在從句中作主語或賓語(作賓語時that 可省略)指物
1.a plane is a machine that can fly. (作主語)
2.the noodles （that） i cooked were delicious. (作賓語)
指人
1.who is the man that is reading the book over there? (作主語)
2.the girl (that) we say yesterday was jim’s sister. (作賓語)
who / that 在定語從句中做主語時， 需要注意的是謂語動詞的單復數應與先行詞保持一致。例如:
i like a sandwich that is really delicious.
i love singers who are beautiful.
i have a friend who plays sports.
i prefer shoes that are cool.
which在從句中作主語或賓語(作賓語時可省略) 指物
1.the silk which is produced in hangzhou sells well. (作主語)
2.the songs （which） liu dehua sang were very popular. (作賓語)
who, whom在從句中分別作主語和賓語（若介詞放在從句后面，則whom可以省略）指人
1.the foreigner who visited our class yesterday is from canada. (作主語)
2.the boy who break the window is called roy. (作主語)
3.the person to whom you just talked is mr li. (作賓語)
4.mrs white is the person to whom you should write. (作賓語)
whose 在從句中作定語指人或物的所有格
i like the girl whose hair is long. (作定語)
在以后的學習中大家還會學到更深層的內容。