分析句子中的非谓语动词?12句子中那个是非谓语动词

题目

分析句子中的非谓语动词?12句子中那个是非谓语动词
1.To learn English is not easy.
2.He found it very difficult to get to sleep..
3.Lucy asked me to turn down the radio..
4.His wish was to become a scientist.
5.There is nothing to worry about.
6.He woke up to find everybody gone..
7.Learning new words is very useful to me.
8.The music is exciting.
9.The boy singing now is a classmate of mine..
10.One day she came into my room laughing happily.
11.The other students in the class keep their eyes closed.
12.Built in 1949,the exhibition hall is almost 50 years old.

答案

1.to learn 不定式做主语
2.to get to sleep 不定式做主语
3.to turn down the radio 不定式做宾语补足语
4.to become a scientist 不定式做表语
5.to worry about 不定式做定语
6.to find 不定式做结果状语,表示意料之外的结果
7.learning v-ing形式做主语
8.exciting v-ing形式做表语,其实就是当一个形容词用了
9.sing v-ing形式做定语
10.laughing v-ing做方式状语
11.closed v-ed形式做宾语补足语
12.built v-ed形式做主语补足语.
所有句子都含有一个非谓语动词,大部分用法还不大一样.
希望能有所帮助,不懂追问.