【问】 He is seldom，if ever，absent from school.

如何分析seldom，if ever?

【答】 seldom，if ever或seldom if ever=seldom or never是个成语，可不分析它的构成，只要掌握住其含义就可以了：“很少”、“难得”、“绝无仅有”。它与rarely，if ever具有相同的含义：

1. She seldom，if ever，goes to the opera.

她难得(很少)去看歌剧。

2. ... his children rarely，if ever，see him at his place of work. (New Concept English，Book 4，L.8)

……孩子们难得在父亲的工作地点看到他。

3. But the women at work in the shipyards and other war plants were seldom，if ever，called ladies. (MWDEU)

但是，在造船厂和其他军事工厂工作的妇女很少被称作女士。