I think I will
I think I shall
going to
gonna
Structure
- Verb[( よ ) う ] + と・思う
- 食べ ようと思う
- 飲 もうと思う
- 行 こうと思う
[Verb[(よ)う]と思う - used to declare a decision that has just been. Since it is a direct declaration it is only used for the speaker’s/writer’s intentions]
[Verb[(よ)う]と思っている - describes an intention that has been already held for some time, or to speak about the intentions of others]