I want to be single all my life
单身───single;一辈子───a lifetime
The soldiers were walking in single file.───战士们排成一列纵队前进.
A single candidate is put forward and the people vote yes or no.───先推出一个候选人，由人们投票表示赞成或反对。
A single spark can start a prairie fire.───星星之火,可以燎原.
I got a single to Birmingham.───我买了一张去伯明翰的单程票.
you still single?───你还是单身吗？
She had had many proposals but preferred to remain single.───许多人向她求过婚,但她愿过独身生活.
He was killed by a single shot from an unseen soldier.───一个埋伏的士兵一枪就把他打死了。
She had a brainstorm in the exam and didn't answer a single question.───她考试时脑子里突然一片混乱，一个题也没答。
A single spark can start a prairie fire.
When sorrows come, they come not single spies, but in battalions.
I couldn't understand a single word she said!
Don't be disheartened by a single failure.
Misfortunes never [seldom] come alone [single].