义项
介词，表示目的
States a purpose, and stands at the head of the sentence: 为了提高水平，他每天练习. A *reason* — why something happened — is 因为, not 为了.
preposition
例句
- 为了提高水平，他每天都练习。為了提高水平，他每天都練習。Wèile (fourth tone, falling) tígāo (second tone, rising) shuǐpíng, (third tone, dipping) tā (first tone, high and level) měi (third tone, dipping) tiān (first tone, high and level) dōu (first tone, high and level) liànxí. (fourth tone, falling)···
To raise his level, he practises every day.
- 为了身体健康，我们应该经常锻炼。為了身體健康，我們應該經常鍛煉。Wèile (fourth tone, falling) shēntǐ (first tone, high and level) jiànkāng, (fourth tone, falling) wǒmen (third tone, dipping) yīnggāi (first tone, high and level) jīngcháng (first tone, high and level) duànliàn. (fourth tone, falling)···
For the sake of our health we ought to exercise regularly.
常见错误
不太对为了下雨，我们没去。
正确因为下雨，我们没去。
为了 introduces a goal you are aiming at; 因为 introduces the cause of what happened. Rain is a cause, never a goal.