1、Do one thing at a time, and do well.
一次只做一件事，做到!
2、Never forget to say “thanks”.
永远不要忘了说“谢谢”!
3、Keep on going never give up.
勇往直前， 决不放弃!
4、Whatever is worth doing is worth doing well.
任何值得做的事就值得把它做好!
5、Believe in yourself.
相信你自己!
6、I can because i think i can.
我行，因为我相信我行!
7、Action speak louder than words.
行动胜于言语!
视情况而定
虽然你的分数不高，但是至少你已经取得了这个证书，这是一个很不错的成就。至于是否有必要再考一次，这取决于你的具体情况和需求。
如果你已经满足了自己的学业要求，那么你可能不需要再考一次，因为四级证书已经足够证明你的英语水平了。
但是，如果你打算申请留学、考研、或者将来从事需要英语交流的职业，那么你可能需要再次考试来提高你的英语水平和分数。此外，你也可以考虑提高英语学习的效率和方法，以获得更好的成绩。可以尝试参加英语口语、听力、阅读等培训课程，多练习英语听说读写，也可以结交一些英语母语者的朋友，提高英语实践能力。综上所述，再考一次取决于你的需求和个人情况。如果你需要提高英语分数以达到特定的目标，那么再考一次可能是一个好主意。
Dear Professor Smith,
I hope this letter finds you well. I am writing to express my sincere gratitude for your guidance and support throughout the semester. Your lectures were not only informative but also engaging, making the subject matter come alive.
I particularly appreciate the extra effort you put into providing additional resources and organizing study groups. These initiatives greatly enhanced my understanding of the course material and helped me excel in my exams.
Moreover, your willingness to answer questions and address concerns, both in and out of class, demonstrated your dedication to our learning experience. Your approachability and patience created a comfortable environment for us to seek clarification and deepen our knowledge.
I would also like to commend your prompt feedback on assignments and your constructive criticism, which allowed me to identify areas for improvement and grow academically.
Once again, thank you for your exceptional teaching and mentorship. Your passion for the subject and commitment to our success have truly inspired me. I am grateful to have had the opportunity to learn from you and look forward to applying the knowledge and skills gained in future endeavors.
Wishing you all the best.
Sincerely,
[Your Name]