以下是一些适合教师节的英语贺卡内容：

感谢与尊敬

"Thank you for making learning fun and exciting. Happy Teachers Day!"

"You have taught me so much and I am grateful for all your help and guidance. Happy Teachers Day!"

"Thank you for always being there and helping me achieve my goals. Happy Teachers Day!"

"I wish to express my sincere appreciation for your dedication and commitment to educating students. Happy Teachers Day!"

"I am grateful for all the knowledge and skills you have imparted to me. Happy Teachers Day!"

祝福与期望

"Teacher hard, happy Teacher's Day!"

"天涯海角有尽处，只有师恩无穷期。祝福您节日快乐，我敬爱的老师!"

"教师节，愿所有老师：去劳累，百病消，阳光笑，容颜俏，生活好，没烦恼!"

"献给敬爱的老师：我们搜寻那些美丽耐人的回忆，也默默遥远地祝福您永远健康快乐!"

"Happy Teachers Day! We are more thankful than we can express."

比喻与赞美

"You are like a third parent. We all love you and respect you."

"We all like having you as our teacher. You have our respect and gratefulness."

"Education is not the filling of a pail, but the lighting of a fire."

"The man who can make hard things easy is the educator."

回忆与思念

"In my mind, you are the harshest father and the kindest mother； you are an inspiration."

"three years passed, and everything turned into the yellow picture. miss the playground, miss the classroom, more miss you! my teacher!"

"i am not your best student, but you are my most reverent teacher. on your holiday, your students wish you to be young forever!"

感谢与礼物

"We wish to show our gratitude and thanks with a small gift. Happy Teachers Day!"

"This small gift is only a tiny token of our gratefulness. We all want to thank you."

这些内容可以根据您的个人风格和具体情况进行调整和选择，以表达您对老师的感激和敬意。