计划和决定用英文怎么说

在英语中，"plan" 是指计划，"decide" 是指决定。

来源：

"Plan" 来自中古英语 "plan"，有"计划"、"规划"的意思。
"Decide" 来自拉丁语 "decidere"，有"决定"的意思。

一些英文例句及其中文翻译：

I have a plan to visit Paris next year. (我有一个明年去巴黎的计划。)
She decided to quit her job and start a business. (她决定辞掉工作，开一家生意。)
We need to make a plan for the project. (我们需要为这个项目制定一个计划。)
He couldn't decide whether to go or stay. (他不知道是走还是留下。)