Subject + 认为 + Clause
认为 (rènwéi) means "to think," "to believe," or "to consider." It introduces a judgment, opinion, or assessment, and is followed by a clause stating what the subject thinks. It is more formal than 觉得 and implies a considered opinion.
我认为这个方案还需要进一步讨论。
Wǒ rènwéi zhège fāng'àn hái xūyào jìnyībù tǎolùn.
I think this proposal needs further discussion.
大多数专家认为气候变化是真实存在的。
Dà duōshù zhuānjiā rènwéi qìhòu biànhuà shì zhēnshí cúnzài de.
Most experts believe that climate change is real.
你认为我们应该怎么解决这个问题?
Nǐ rènwéi wǒmen yīnggāi zěnme jiějué zhège wèntí?
How do you think we should solve this problem?