[不用于名词前]
Better be alone than in bad company.
交损友不如无友。
It’s terrible to find oneself alone in such a place.
发现独自一人在那样一个地方真可怕。
Believe me; you’re not alone in feeling sad.
相信我，并不只是你一个人感到难过。
The old man cried like a child because he felt so alone.
老人感到很孤独，像小孩子一样哭了起来。
In the United States alone, over 100 million cellphones are thrown away each year
仅在美国，每年就有超过1亿部手机被扔掉。
Why don’t you just mind your own business and leave me alone?
为什么你就不能少管闲事不打扰我？
Leave the cakes alone. They’re for the guests.
别动那些蛋糕，那是给客人吃的。
He prefers to travel alone.
他更喜欢独自旅行。