Learn Hardcore Chinese: wèile zhège biāozhǔn, tā měi wǎnshang xiě de jùzi dōu chāoguò shí gè. - For this standard, every night the sentences she writes exceed ten.

Breakdown of wèile zhège biāozhǔn, tā měi wǎnshang xiě de jùzi dōu chāoguò shí gè.

Used when counting nouns or when specifying a specific instance of a noun.

There are also classifiers for people, for bound items such as books and magazines, for cups/glasses, etc.

The classifier 个 is a general one that can be used for any of these.

What exactly does 为了 (wèile) mean here, and how is it different from 为 (wèi) or 因为 (yīnwèi)?

为了 introduces a purpose / goal: “in order to / for the sake of …”

In this sentence:

为了这个标准 ≈ “in order to meet this standard” / “for the sake of this standard”

Differences:

为了 + noun/phrase = for the purpose of, so that…
- 为了这个标准，她每天晚上都学习。
  “For this standard / to reach this standard, she studies every night.”
为 + noun can mean for / on behalf of / for the benefit of, but it doesn’t so strongly emphasize purpose:
- 为这个标准，她每天晚上都学习。
  Grammatically possible, but sounds a bit stiff and less natural than 为了 here.
因为 + reason gives a cause, not a purpose:
- 因为这个标准，她每天晚上都学习。
  “Because of this standard, she studies every night.”
  → Focus: the reason, not her goal.

So here 为了 is used because we’re talking about what she does in order to achieve a standard, not just the cause in a neutral way.

Why is 为了这个标准 at the very beginning of the sentence? Could it go somewhere else?