假定你是星光中学的高中毕业生李华，母校将为高一新生举办主题为“What to learn in senior high school?”的英语沙龙活动，特邀请你结合自身经历谈谈自己的体会。请根据以下提示准备一份英语发言稿。
Good morning, everyone! It is my honor to be here to share with you my opinions on learning in senior high school.
In the coming three years，our school life will be challenging. Firstly，we should learn to learn efficiently. Personally，I used to try effective methods to achieve my academic goals. Developing a good habit is also of importance. It really benefited me a lot to preview lessons，get actively involved in class，and review what had been taught after class.
In addition，we should learn how to get along well with others. In school，I respected teachers and was friendly with classmates. It was with sincerity and faithfulness that we created a harmonious atmosphere.
Finally, we should take part in sports and outdoor activities frequently，they were really helpful to build up my body and enrich my school life.
No pains，no gains. I am sure that with your great efforts， you will enjoy a colorful and harmonious environment.