[观察例句]
①Walking in the park，she saw an old friend. 时间状语
②Being ill，he couldn't go to school. 原因状语
③Working hard，you'll make great progress. 条件状语
④The boy ran even faster，reaching the school out of breath.
结果状语
⑤All night long he lay awake，thinking of the problem. 伴随状语
⑥Is there a swimming pool in your school？ 前置定语
⑦I know the boy sitting besides you just now. 后置定语
⑧I heard him singing next door. 宾语补足语
