Learn English – “have dinner” vs. “have a dinner”

An intransitive verb is one that cannot take a direct object. Normally, intransitive verbs cannot be made passive.

The past participle is normally passive (except with have).

From this it follows that intransitive verbs, like sit and stand in the senses intended, normally cannot have past participles without have.

However, there are some intransitive verbs that are best considered idiomatic exceptions: they can still have past participles. You could say those exceptional past participles don't have the normal passive sense. You might call them adjectivised, but I'm not sure I'd pick that term, considering that sat and stood cannot be used attributively (before the noun).

I am sat here.

She was stood there.

We are agreed.

She was gone.

There are more.

Changing the order of the words often changes the meaning or nuance.

1. "I don't think he likes it" is the normal formulation. It focuses on the thoughts and opinions of the speaker. Its purpose is to make a commentary.

2. "I think he doesn't like it" can be used as a way of contradicting expectations, e.g.

"Don't poke the cat with that stick."
"We're just playing."
"Well, I think he doesn't like it."

This focuses on and directs the attention towards the feelings of the cat -- its purpose is to change someone else's perceptions.

Note that the basic meaning here is, "He doesn't like it. " The addition of "I think" does not indicate doubt on the part of the speaker. It is used to make the statement seem less harsh.

Answer

Yes, it is grammatically correct to say a sentence like "I think he doesn't like it". Just be aware that such a rephrasing usually changes the meaning or requires a particular context.