用よう意いにかかる

expression, godan verb (-ru)

set about preparations; start getting ready

Used when someone begins the process of preparing for something. Often implies a deliberate start to the preparatory actions.

• 旅りょ行こうの用よう意いにかかる前まえに、持もち物ものリストを確かく認にんした。

  Before setting about preparations for the trip, I checked the packing list.

• 彼かれはすぐに夕ゆう食しょくの用よう意いにかかった。

  He immediately started getting dinner ready.