give up； give in； give out
give up指行为或努力受挫或别的原因而主动放弃，可用作及物动词，跟名词或v－ing作宾语；也可作不及物动词；
give in指不再坚持自己的行为或观点等，而按别人的要求去做，一般作不及物动词；
give out意为“用完；耗尽；体力不支”，是不及物动词。
例如：
①The wind was strong and the waves were big，so he had to give up attempting／his attempt to swim the channel．风急浪高，他只好放弃横渡海峡的打算。
②All the girls finished the race except two who gave up half way．
除有两个中途放弃外，其它所有的姑娘都跑完了比赛的全程。
③As neither of the two sides would give in，the agreement fell through．
由于双方都不肯让步，所以没能达成协议。
④After a long journey，my strength gave out and couldn’t walk any farther．
走了很长的路，我已筋疲力尽，再也走不动了。
