لفتح

In a sentence

• ذهبت إلى الباب لفتح القفل.

  I went to the door to unlock the lock.

  Here, 'لفتح' indicates the purpose of an action, meaning 'to unlock.' It is used as part of an infinitive form.

• استخدمت المفتاح لفتح الصندوق.

  I used the key to open the box.

  In this sentence, 'لفتح' is used to describe the usage or intent of an action, indicating 'to open.'

• قمت بتدوير المقبض لفتح النافذة.

  I turned the handle to open the window.

  Here, 'لفتح' is describing the action's goal, 'to open,' demonstrating its role in showing purpose.