用点劲英语怎么说

"用点劲"是一个俗语，意思是尽一点力量或努力去做某事。在英文中，可以用以下几种表达方式来表达这个意思：

"put in some effort"，意思是尽一点力量或努力去做某事。例句：
"I know you can do it if you put in some effort." (我知道如果你尽一点力量，你一定能做到的。)
"You need to put in some effort if you want to improve your grades." (如果你想提高成绩，就要尽一点力量。)
"try harder"，意思是努力去做某事。例句：
"You need to try harder if you want to pass this exam." (如果你想通过这场考试，就要努力一点。)
"I know you can do it if you try harder." (我知道如果你努力一点，你一定能做到的。)
"put forth some effort"，意思是尽一点力量或努力去做某事。例句：
"You need to put forth some effort if you want to learn this new skill." (如果你想学习这个新技能，就要尽一点力量。)
"I know you can do it if you put forth some effort." (我知道如果你尽一点力量，你一定能做到的。)

这些表达方式均可用于鼓励他人或提醒自己去努力做某事。