give up on和give up的區(qū)別：中文意思不同、用法不同。give up on的中文含義為“對…絕望”、“對…不抱希望”，表示不再信任、相信；give up的中文含義為“放棄”、“投降”、“戒除”，表示將某物讓給、交給或獻給他人。
一、give up on的意思及用法
give up on意為對…絕望;對…不抱希望。例句有：
1、He urged them not to give up on peace efforts
他力勸他們不要放棄對和平的努力。
2、They have led some birds to give up on migration.
它們已導致一些鳥類放棄遷徙。
3、They'll have to give up completely on certain of their studies.
他們將不得不徹底放棄某些研究。
4、I've been trying to give up smoking for getting on for two years now
到現(xiàn)在，我設法戒煙已快兩年了。
5、Every time I'm about to give up on this business.
每次我打算放棄工作的時候。
6、Good teachers will never give up on their students.
好老師絕對不會放棄他們的學生。
二、give up的意思及用法
give up意為放棄;戒除;認輸;辭去（工作）;讓出;自首;投案。例句有：
1、Coastguards had given up all hope of finding the two pers alive.
海岸警衛(wèi)隊對兩位潛水員生還已完全不抱希望。
2、After a fruitless morning sitting at his desk he had given up.
他在書桌前徒勞地坐了一上午之后便放棄了。
3、She gave up her job to join her husband's campaign...
她辭去工作，加入到丈夫的宣傳活動中。
4、Georgia refuses to give up any territory...
格魯吉亞拒絕出讓任何領(lǐng)土。
5、He suffered a serious injury that obliged him to give up work.
他受傷嚴重，不得已只好放棄工作。
