〜ようとする you to suru
〜ようとする（you to suru）means “to try to ...; to be about to ...”. Built on the volitional form plus とする. Formation: V（意向形）+ とする（例：行こう＋とする）
to try to ...; to be about to ...
N3Formation
V（意向形）+ とする（例：行こう＋とする）
Explanation
Built on the volitional form plus とする. With effort verbs it means 'try / make an attempt to do', often a will-driven attempt that may or may not succeed. With momentary verbs it means 'be just about to do' something at that very moment. The subject's intention or imminent action is the focus.
Examples
Note
The subject is usually animate (a person/animal with intention). Use the past 〜ようとしたとき for 'just as one was about to'.
FAQ
〜ようとする — what does it mean and how is it used?
to try to ...; to be about to .... Built on the volitional form plus とする. With effort verbs it means 'try / make an attempt to do', often a will-driven attempt that may or may not succeed. With momentary verbs it means 'be just about to do' something at that very moment. The subject's intention or imminent action is the focus.
〜ようとする — how do you form it?
V（意向形）+ とする（例：行こう＋とする）
〜ようとする — any usage notes?
The subject is usually animate (a person/animal with intention). Use the past 〜ようとしたとき for 'just as one was about to'.