"Don't tell the police or i'll hurt your son " the man said to her

"Don't tell the police or i'll hurt your son " the man said to her

→ The man asked her not to tell the police or she would hurt her son.

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Giải thích: -Đây là câu gián tiếp dạng mệnh lệnh, công thức:  S + told + O + to-infinitive

-Và khi chuyển sang gián tiếp thì ta lùi thì các từ trong câu như: will→would,... và chuyển your→her

=> The man told her not to tell the police or she would hurt her son.