tā / bù / zì / liàng / lì / de / xiǎng / yí / ge / rén / wán / chéng / zhè / me / dà / de / xiàng / mù / zuì / hòu / hái / shì / shī / bài / le

他不自量力地想一个人完成这么大的项目，最后还是失败了。

He overestimated his abilities by trying to complete such a large project alone and ultimately failed.