I need to explain why "I think it good." is wrong to a colleague. But I am having trouble finding the rule...?

I am aware that it must be phrased "I think it IS good." Or "I think it's good." The argument the Taiwanese person uses is that in his text (which seems incorrect) It lists the Subject + think/consider/feel/ + it +adj + clause
Does anyone have any links to rules about 'it' + think? Or am I somehow imagining this error which seems glaringly wrong to me exists? I won't let the error go to print again, but I really want to be able to explain clearly why the 'it' in that scenario is incorrect usage. It makes me CRAZY!!

2010-12-28T17:17:10Z

The other pattern that is in the text in the same page which IS correct is
"I consider it wise."

2010-12-28T17:19:36Z

did a search using the google Ngram viewer; turns out that this was common usage in the 1760's but is less and less used in modern writing. So he isn't wrong, it just is antiquated. Thank you for your answers. :) If you CAN find a rule please leave a link below.

Anonymous2010-12-28T17:22:37Z

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tell him it's just a weird thing americans do. it is how it is done. it's the price of learning another language. there is no way to explain it. there is a way, but it is so much easier to say this, so i've learned :D good luck