to sneak up
01
忍び寄る, こっそり近づく
to approach or move towards someone or something quietly, carefully, and usually without being noticed
例
I always sneak up on my friends during surprise parties. ( present simple )
私はサプライズパーティーの間、いつも友達にこっそり近づきます。
The cat sneaked up behind the bird before pouncing. ( past simple )
猫は鳥の後ろにこっそり近づき、飛びかかった。（単純過去）
