Verb + 了 (+ Object)
The particle 了 placed directly after a verb indicates that the action has been completed. It functions as a perfective aspect marker, signaling that an event happened and reached its endpoint. For example, 我吃了饭 means "I ate (the meal)" — the eating is finished.
我昨天买了一件新衣服。
wǒ zuótiān mǎi le yī jiàn xīn yīfu.
I bought a new piece of clothing yesterday.
她喝了三杯咖啡才醒过来。
tā hē le sān bēi kāfēi cái xǐng guòlái.
She didn't wake up until she had three cups of coffee.
我们看了一部很好看的电影。
wǒmen kàn le yī bù hěn hǎokàn de diànyǐng.
We watched a really good movie.