妈妈轻轻拍着宝宝的背哄他入睡。

The mother is ___patting the baby's back gently to help him sleep.

她轻轻拍打着枕头，让它变得更蓬松。

She was ___patting the pillow to make it fluffier.

老师轻轻拍了拍学生的肩膀以示鼓励。

The teacher gave the student an encouraging ___pat on the shoulder.