tā / shuō / huà / dài / zhe / fǎn / fěng / de / yǔ / qì / ràng / rén / tīng / bù / chū / tā / dào / dǐ / shì / bú / shì / rèn / zhēn / de

他说话带着反讽的语气，让人听不出他到底是不是认真的。

His words had an ironic tone, so it was hard to tell whether he was serious.