ourselves前面加介词for,by,in,to等,by ourselves的中文意思是adv,我们自己独自地

For then we will realize that our lives are not controlled by the whims of fate, but by ourselves, by our own actions, and by our own willpower.因为到那时我们就会意识到,我们的生活不是由莫测的命运控制的,而是由我们自己、我们自己的行动和我们自己的意志控制的。