She was tempted to buy the expensive dress after seeing it in the magazine.

was 是 be 动词的过去式，在这里构成过去进行时态。 tempted 是动词 tempt 的过去分词形式，tempt 的意思是"诱惑、引诱"，tempted 表示"被诱惑的、很想做某事的"。 was tempted 构成被动语态，表示"被诱惑"的状态，在这里指"内心很想买那条裙子"。