鼓励学生学好英语的句子有很多，以下是一些例子：

1. "学习英语没有捷径可走，世上无难事，只要肯攀登。"

2. "冰冻三尺非一日之寒，更加努力地学习，更加勤奋地操练，你所付出的一切将得到上帝的报答，上帝是公平的。"

3. "Yes, you can do it!"

4. "Keep up the good work!"

5. "Don't give up!"

6. "You are doing great!"

7. "I am proud of you!"

8. "If you talk to a man in a language he understands, that goes to his head. If you talk to him in his own language, that goes to his heart."

9. "One language sets you in a corridor for life. Two languages open every door along the way."

10. "The limits of my language are the limits of my world."

11. "Never give up, never lose the opportunity to succeed."

12. "Don't try so hard, the best things come when you least expect them to."

13. "Achievement provides the only real pleasure in life."

14. "Man struggles upwards；

15. "You’re doing an amazing job! Keep going, superstar!"

16. "I’m so proud of you! You’re getting better every day!"

17. "Wow, you did it! I knew you could!"

18. "Don’t give up! You’re stronger than you think!"

19. "You’re making progress every day! Keep shining!"

这些句子旨在激励学生们在学习英语的过程中保持积极的态度和持续的努力。