不具体指若干时间以前，可使用现The sky clouded over before the storm.
暴风雨来临前, 天空乌云密布。
…前面
于，…以前于…之前
)供…研究，由…审判…之前前；从前；以前
；走
前面或…以前The sky clouded over before the storm.
暴风雨来临前, 天空乌云密布。
Look around you before crossing the streets.
横过马路
时候朝各方面看看。
The plane circled the airport before landing.
飞机着陆以前机场上空盘旋。
She was a feminist before her time.
她是个思想超前女权主义者。
They steadily pushed their foes before them.
他们不停地追击敌人。
The children had a frolic before bedtime.
孩子们睡觉前玩一会儿。
By Gosh! I never heard that before.
哎呀，真是从来没有听说过事！
I always get the jitters before exams.
我考试前总是焦躁不安。
I laid the matter squarely before him.
我把这一问题直截了当地向他提出来。
They sadly surveyed the scene before them.
他们悲伤地环视眼前情景。
The hunter sighted carefully before firing his gun.
猎人射击前仔细瞄准。
I accomplished two hours' work before dinner.
我吃饭前完成了两小时工作。
He rewarded the bearer before reading the note.
他读那短笺之前, 给送信人小费。
She damped her cloth before cleaning the window.
擦窗之前她把抹布弄湿。
The nurse cleansed the wound before stitching it.
护士把伤口弄干净后才把它缝合。
I have descanted on this subject before.
我曾经详细论述过这个主题。
She desired no one for husband before him.
她非他不嫁。
The children are having a frolic before bedtime.
孩子们睡觉前正嬉戏玩闹。
She gets very hyped up before a race.
她一到赛跑前就来了精神。
The plane did a few stunts before landing.
飞机着陆前做了一些特技。
声明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件观点；若发现问题，欢迎向我们指正。
