He deeply empathised with her loneliness as he had been in similar situations himself.

### 解释 empathised 是动词 empathise 的过去式，empathise 由前缀 em-（表示"进入...状态"）和希腊词根 pathos（"感受、痛苦"）组成，意思是"感同身受、产生共鸣"。这个词强调设身处地理解他人的情感和处境。