系动词都跟副词often

He would think of his lost dog, but it wasn't often.

按语法来说，系动词后多为形容西，often词性为副词，用在be动词后，属于习惯用法吗？

often在早期英语中是可以用作形容词的。例如 The Freedictionary：

Ofen：3 adj. Archaic. frequent.

He would think of his lost dog, but it wasn't often.

这个句子中，it指代主句内容，often为形容词作表语，意为frequent。

还可以有一种解释，即was在这里不是系词，而是不及物动词，意为happen，take place。wasn't often = didn't happen often.

曹荣禄 -

擅长：动词用法,句法问题 | 采纳率 82% | 回答于 2021-04-17 10:12

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