The man was very sick, now.He crawled about, on hands and knees. He had lost everything—his blanket, hisgun, and his gold.
介词about在句中的表示什么？
about 在本句是副词，意为“到处”，等于 around。
假如后面接了宾语，about 则是介词。
各举一例：
Few people walkedabout in this wicked weather. （副词）
极少有人在这么恶劣的天气四处走动。
We wandered aboutthe town for an hour or so. （介词）
大家在城里到处游逛了一个小时左右。
