(1)努(奋)力(try very hard to gain sth)[I+prep (for/after)，I+to-inf]：～for success/freedom/right/wealth 力争(得到)成功/自由/权利/财富;～for the good of the people 为人民的利益奋斗;～after perfection/honour力争完美/争取荣誉;～after a clearer view of the subject对问题有更清楚的了解;～to improve one's performance/complete a task/be a useful member of the team 努力提高自己的演出水平/完成任务/成为队里有用的一员;〖同〗struggle，push，strain，undertake;

(2)斗争(try very hard to struggle)[I，I+prep (against/with)]：～against injustice/oppression/disease/wind and tide与不公平/压迫/疾病/风浪斗争(搏斗);～with difficulties 跟困难斗争;〖同〗fight，struggle，battle;

【辨异】strive与attempt、endeavour和try的区别见ATTEMPT。