没有做饭的动力可以用英文表达为 "lack of motivation to cook" 或 "lack of cooking motivation."

这个短语的来源可能来自人们对于做饭这个活动的感受。有些人喜欢做饭，觉得这是一种休闲娱乐，而有些人则觉得做饭是一项费时间、费精力的任务，因此对于做饭并没有什么积极的情绪或动力。

下面是一些关于"lack of motivation to cook"的英文例句：

"I'm just so tired after work that I don't have the motivation to cook." (我工作后感觉太累了，根本没有做饭的动力。)

"I hate cooking, so I usually don't have any motivation to do it." (我讨厌做饭，所以通常没有什么做饭的动力。)

"I used to love cooking, but now I seem to have lost my motivation for it." (我过去喜欢做饭，但现在似乎没有了做饭的动力。)

"I don't have the motivation to cook tonight, do you want to order takeout instead?" (我今晚没有做饭的动力，你想不想叫外卖呢？)