Japanese Lesson 20 Exercise II1Question (4) Please help explain it after class. ...

I want to grow up quickly so that I can work abroad.

The grammar of this sentence is an adjective ending with "ぃく" and "なる", indicating the change of state.

Ex: It's hot (hot → hot) (hot).

The conjunction of the verb (i.e. "ますすますすすたぃ") indicates the action that the subject wants to take.

Example: Business trip for personal reasons (business trip → travel → travel) (I'm going on a business trip)

なって is the intermediate form of なる, which can be regarded as the て-shaped pause of the verb, that is, the word is not finished.