تمرین هوازی به شما کمک می‌کند تا از اینکه رباط‌های زانو آسیب ببینند جلوگیری کنید.

Questions & Answers about تمرین هوازی به شما کمک می‌کند تا از اینکه رباط‌های زانو آسیب ببینند جلوگیری کنید.

How does the phrase از اینکه work with جلوگیری کنید in this sentence?
The compound verb to prevent is جلوگیری کردن از. When you prevent a whole action rather than just a simple noun, you use از اینکه (from this that) followed by the action. The action you are preventing goes right after از اینکه, and the main verb جلوگیری کنید gets pushed to the very end of the clause.
There are two verbs in the subjunctive here: ببینند and کنید. What triggers each of them?
ببینند is in the subjunctive because it is the action being avoided or prevented, introduced by از اینکه. جلوگیری کنید is in the subjunctive because it follows کمک می‌کند تا (helps you so that), which requires the subjunctive for the action you are being helped to achieve.
Why is the first subjunctive verb آسیب ببینند in the third-person plural?
Its subject is رباط‌های زانو (knee ligaments). Even though ligaments is a plural inanimate noun, Farsi speakers often use the plural verb to emphasize that there are multiple distinct parts involved, though the singular verb آسیب ببیند would also be grammatically correct here.
Why is شما preceded by the preposition به at the beginning of the sentence?
In Farsi, the verb for to help is کمک کردن, and it strictly requires the preposition به to indicate who is receiving the help. You are literally saying that aerobic exercise does help to you, rather than using a direct object.

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