Develop question3 as a topic sentence
It has been said,” Not everything that is learned is contained in books.” This quote means knowledge is not only gained from books, it is also gained from experience. I think that the knowledge from experience is more important than the knowledge from book, because experience is something personally lived through or encountered. On the other hand, when you read a book, it doesn’t mean you lived through all the condition of this book. For example, when you are experienced at swimming, you don’t have to think too much and you can swim very well. Because of this, you memorize this action in your brain and it became your experience. Therefore this experience will be remembered in your brain forever. In other words, knowledge from book is easier to lose than knowledge from experience. For instance, when you read a book, you can imagine the situation of this story, but you cannot live through it because this situation is not in the real life. In conclusion, the knowledge from experience is better than the knowledge from book. The knowledge from experience stay in our body forever and it help us so much. However, the knowledge from book cannot help us to go through our life so much.