他进步这么快,让老师都刮目相看。Tā jìnbù zhème kuài, ràng lǎoshī dōu guāmù xiāngkàn.He improved so fast that even the teacher saw him in a new light.
没想到你画得这么好,真让人刮目相看。Méi xiǎngdào nǐ huà de zhème hǎo, zhēn ràng rén guāmù xiāngkàn.I never expected you to paint so well; it really changes how people see you.
三年不见,他已经成了大老板,大家都对他刮目相看。Sān nián bú jiàn, tā yǐjīng chéng le dà lǎobǎn, dàjiā dōu duì tā guāmù xiāngkàn.After three years apart he has become a big boss, and everyone looks at him with new respect.