他威胁我说如果不交作业就会不及格。
tā wēixié wǒ shuō rúguǒ bù jiāo zuòyè jiù huì bùjígé 。
He threatened me by saying that if I didn't submit my assignment, I would fail.
警察警告他不要威胁无辜的人。
jǐngchá jǐnggào tā búyào wēixié wúgū de rén 。
The police warned him not to threaten innocent people.
这封信中有威胁的内容。
zhè fēng xìn zhōngyǒu wēixié de nèiróng 。
This letter contains threatening content.