《北史·列传·卷八十四》
流亡人中有许穆之、郝忄炎之二人投靠难当，并且改姓为司马。许穆之自己说名叫飞龙。郝忄炎之自己说名叫康之，说是晋室的近亲。
流人有许穆之、郝惔之二人投难当，并改姓为司马，穆之自云名飞龙，惔之自云名康之，云是晋室近戚。
Among the vagrants, Xu Muzhi and Hao Xinzhi gave their allegiance to Nanddang and changed their family name to Sima. Xu Muzhi said his name was Feilong. Hao Xinzhi said his name was Kangzhi and claimed to be a close relative of the Jin royal family.
<s>[INST] Analyze the grammatical structure of the following Classical Chinese sentence and provide its English translation: 流人有许穆之、郝惔之二人投难当，并改姓为司马，穆之自云名飞龙，惔之自云名康之，云是晋室近戚。 [/INST]
**Grammatical analysis**:
- **流人有许穆之、郝惔之二人**：Subject: 流人 (vagrants); Predicate: 有 (have); Attribute: 许穆之、郝惔之 (Xu Muzhi, Hao Xinzhi)
- **投难当**：Verb complement of 有 (have), meaning "gave their allegiance to Nanddang"
- **并改姓为司马**：Conjunction: 并 (and); Verb: 改姓 (changed their family name); Object: 司马 (Sima)
- **穆之自云名飞龙**：Subject: 穆之 (Xu Muzhi); Verb: 自云 (said); Object: 名飞龙 (name Feilong)
- **惔之自云名康之**：Subject: 惔之 (Hao Xinzhi); Verb: 自云 (said); Object: 名康之 (name Kangzhi)
- **云是晋室近戚**：Subject: 惔之 (Hao Xinzhi); Verb: 云 (claimed); Object: 是晋室近戚 (to be a close relative of the Jin royal family)

**English translation**:
Among the vagrants, Xu Muzhi and Hao Xinzhi gave their allegiance to Nanddang and changed their family name to Sima. Xu Muzhi said his name was Feilong. Hao Xinzhi said his name was Kangzhi and claimed to be a close relative of the Jin royal family.</s>
Analyze the grammatical structure of the following Classical Chinese sentence and provide its English translation: 流人有许穆之、郝惔之二人投难当，并改姓为司马，穆之自云名飞龙，惔之自云名康之，云是晋室近戚。
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**Grammatical analysis**:
- **流人有许穆之、郝惔之二人**：Subject: 流人 (vagrants); Predicate: 有 (have); Attribute: 许穆之、郝惔之 (Xu Muzhi, Hao Xinzhi)
- **投难当**：Verb complement of 有 (have), meaning "gave their allegiance to Nanddang"
- **并改姓为司马**：Conjunction: 并 (and); Verb: 改姓 (changed their family name); Object: 司马 (Sima)
- **穆之自云名飞龙**：Subject: 穆之 (Xu Muzhi); Verb: 自云 (said); Object: 名飞龙 (name Feilong)
- **惔之自云名康之**：Subject: 惔之 (Hao Xinzhi); Verb: 自云 (said); Object: 名康之 (name Kangzhi)
- **云是晋室近戚**：Subject: 惔之 (Hao Xinzhi); Verb: 云 (claimed); Object: 是晋室近戚 (to be a close relative of the Jin royal family)

**English translation**:
Among the vagrants, Xu Muzhi and Hao Xinzhi gave their allegiance to Nanddang and changed their family name to Sima. Xu Muzhi said his name was Feilong. Hao Xinzhi said his name was Kangzhi and claimed to be a close relative of the Jin royal family.
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