重点讲解：
1. finish off
结束；完成；<非正>杀死；毁掉；吃光（某物）
eg. He began to tidy up his desk and finish off the week's work.
他开始整理书桌，结束一周的工作D8YZbt5_=swymb。
eg. He has to finish off three players to get the prize.
他得拼掉三个选手后才能获奖_cSKW%6XQ,[rm。
2. blow up
引爆；（使）炸毁；（使）爆炸；
eg. He was jailed for 45 years for trying to blow up a plane.
他因为企图炸毁一架飞机而被判入狱 45年BaH#1JeB%&=h@(~]4c6。
eg. Their boat blew up as they slept.
他们睡觉的时候船爆炸了JtEh~n].3,8)#4p(。
3. put on weight
体重增加；
eg. I'm lucky really as I never put on weight.
我很幸运，因为我的体重从来没有增加过xQpX3vqON+2NMS。
eg. You have put on weight.
你发福了i5&j@kW,jK。