我要拼命用英文怎么说

在英语中，"拼命"通常是指尽力做某事或努力完成某些事情。在这种情况下，你可以用以下表达来表示这个意思：

try one's hardest
give it one's best shot
do one's best
put in maximum effort
exert oneself to the utmost

例句：

I'll try my hardest to finish this project on time. (我会拼命把这个项目按时完成。)
She always gives it her best shot, no matter how difficult the task is. (她无论任务有多难，都会尽力去完成。)
He's been working hard and doing his best to improve his grades. (他一直在努力工作，尽力提高成绩。)
She put in maximum effort to prepare for the marathon. (她拼命为马拉松做准备。)
He exerted himself to the utmost to pft the heavy weight. (他拼尽全力举起了那个沉重的重物。)