Ⅰ. 写出下划线部分的句子成分
1. Birds fly. ( 谓语 )
2. The early bird catches the worm. ( 宾语 )
3. They are birds of a feather. ( 表语 )
4. I heard the birds singing merrily. ( 宾语补足语 )
5. She bought the bird a cage. ( 间接宾语; 直接宾语 )
6. Her speech is wonderful. ( 表语 )
7. The big fire happened during the night. ( 状语 )
8. There lives a family of five upstairs. ( 主语 )
9. They know us very well. ( 状语 )
10. I saw a male enter the building. ( 宾语 )