Subject + 很 + 固执
固执 (gùzhí) means "stubborn," "obstinate," or "set in one's ways," describing a person who refuses to change their mind or behavior. It generally carries a negative connotation. For example, 他的朋友很固执 means "his friend is stubborn."
我爸特别固执,一旦决定了就不会改变。
wǒ bà tèbié gùzhí, yīdàn juédìng le jiù bù huì gǎibiàn.
My dad is especially stubborn; once he's made a decision, he won't change it.
你别那么固执,听听别人的意见吧。
nǐ bié nàme gùzhí, tīng ting biérén de yìjiàn ba.
Don't be so stubborn; listen to other people's opinions.
她固执地认为自己的方法是对的。
tā gùzhí de rènwéi zìjǐ de fāngfǎ shì duì de.
She stubbornly believed that her method was correct.