I am looking at the children ___playing__volleyball.
___playing__volleyball是对 the children的补充说明,也就是说孩子们正在打排球.
I主语,am looking at 谓语,the children 宾语,playing volleyball宾语补足语.
翻译:我正在看那些孩子打排球.
I am looking at the children ___playing__volleyball.
___playing__volleyball是对 the children的补充说明,也就是说孩子们正在打排球.
I主语,am looking at 谓语,the children 宾语,playing volleyball宾语补足语.
翻译:我正在看那些孩子打排球.