参考范文：
As is illustrated in the picture, a pupil is asking his father why he is going to school if his phone already knows everything. It can be known that the pupil lacks a thorough understanding of going to school.
Compared with the phone, there are certain things that can be only achieved by going to school. In the first place, going to school endows us with the experiences of getting along with others. Only by contacting people can our interpersonal skills be developed. The phone only provides information in an environment where there is just the phone and you. Secondly, you can consult your teacher face to face about any detail of your question, which cannot be done on your phone. Last but not least, school is a place where you can learn to be independent. If you stay with your parents all the time, you will never truly grow up.

To conclude, it’s a necessity for kids to go to school. It is a truth which should be well acknowledged that school can never be replaced by the phone.