父母这样做也是为你好,你应该努力学习,不让父母失望,也许这样你会有空闲的时间
Parents do things like this is for you own good,you should study harder,don't let them disappointed ,maybe you will have more spare time.
The reason why your parents did(do) this to you is that it is good for you, in return, you should not make your parents disappointed and study hard. Doing this may help you (to )get a little free time.
Parents also do this for you, you should study hard, don't let your parents down, maybe you'll have free time.