Subject + 吓 + 了 + Complement
The verb 吓 means "to scare" or "to frighten" and is used to describe startling or intimidating someone. It frequently appears in the fixed expression 吓了一跳, meaning "to be startled" or "to get a fright." The subject of 吓 can be a person or thing that causes the scare.
那只猫突然跳出来,吓了我一跳。
Nà zhī māo tūrán tiào chūlái, xià le wǒ yī tiào.
That cat suddenly jumped out and startled me.
别躲在门后面吓人。
Bié duǒ zài mén hòumiàn xià rén.
Don't hide behind the door and scare people.
这部恐怖电影真的吓到我了。
Zhè bù kǒngbù diànyǐng zhēn de xià dào wǒ le.
This horror movie really scared me.