以…为例【yǐ…wéi lì】

以…为例 introduces an example: "take X as an example", "to use X as an illustration". The example goes between 以 and 为例, and the frame usually opens the sentence, with the point it illustrates after the comma. 为 here reads 为wéi, "as". It is formal – lectures, reports, articles, textbooks.

With a subject, it says what someone used as their example.

It can also follow a general statement, as the illustration of it.

Keep the frame together

The example goes inside the frame, after 以. English "for example, Beijing" order doesn't carry over.

• × 为例北京 → 以北京为例
• × 我们为例北京 → 我们以北京为例

In conversation, 比如 or 拿…来说 do the same job.