目的状语从句：从句部分是用以补充说明主句中谓语动词发生的目的的状语从句。
目的状语从句和原因状语从句与主句一起构成完整的句子。
A purpose or reason clause needs a main clause to make a complete sentence.
目的状语从句。我们已经明确了消费者的权力，以便我们来处理他们的投诉。
We've got to define consumer's right so that we can deal with their complains.
吉姆每周去健身房四次，是为了减肥。(原因状语从句转译为目的状语从句)。
Jim goes to the gym four times a week because he is thinking of losing weight.
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