未婚

例句：

1. 1. He is an unmarried manwho has never married.
   他是一个未婚的男人，从未结过婚。
2. 2. She is single and hasnot found a partner yet.
   她单身，还没有找到伴侣。
3. 3. The couple is unmarriedbut live together as husband and wife.
   这对夫妇未婚但同居如夫妻。