Lions sometimes hunt alone.

　　獅子有時(shí)單獨(dú)獵食。

　　He dines alone most nights.

　　大多數(shù)晚上他都獨(dú)自進(jìn)餐。

　　I didn't like being alone at home.

　　我不喜歡獨(dú)自在家。

　　He felt unsafe and alone.

　　他感到又危險(xiǎn)又孤單。

　　I ended up alone in a strange city.

　　我最終是獨(dú)自呆在了一個(gè)陌生的城市。