Traditional: 以為
以为 (yǐ wéi) means “to think (i.e. to take it to be true that ...) (Usually there is an implication that the notion is mistaken – except when expressing one's own current opinion.)”. It is an HSK 4 Chinese word (traditional 以為) in the HSK 3.0 vocabulary.
我以为他不会来了。
Wǒ yǐwéi tā bú huì lái le.
I thought he wouldn't come.
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