long I /lɔŋ/ I. adj. 1.长的：a railway six hundred kilometres long 一条600公里长的铁路；the Long March 长征 2. 长久的：a teacher of long experience 一位经验丰富的教师 ‖II. adv. 长久，长期地：all day (night) long整天(夜) I can’t wait much longer.我不能久等了。Serve the people all one’s life long.一辈子为人民服务。 ‖III. n. 长时间：It will not take long. 这不需要很多时间。 before long 不久以后 (=soon): The book will be published before long. 这部书不久要出版。long ago 很久以前：It was long ago that I first met him. 很久以前我初次见到他。long before在…很久以前：We knew each other long before we came to this city.我们到这个城市很久之前，彼此就认识了。no longer不再：China is no longer what it used to be. 中国不再是以前那个老样子了。 not…any longer不再：He is not young any longer.他不再年轻了 (= He is no longer young.)。 So long! 再见! as/so long as 只要；既然，由于：You can go out, so/as long as you promise to be back before 11 o’clock. 只要你答应11点以前回来，你可以出去。［考句］He will surely finish the job on time so long as he’s left to do it in his own way. 只要让他用他自己的方法去做，他肯定能按时完工。
long II /lɔŋ/ vi. 渴望；极想(后接不定式或for引起的短语)：He is longing to travel around the world. 他渴望作环球旅行。She longed for her mother to buy her a camera. 她渴望她母亲给她买一部照相机。
