Answer:
It's not really difficult to email your teacher when you are sick.
but here are your steps:
1.) Address it, begin politely stating your purpose and why you are emailing.
Example:
"Hello Mr/Mrs. _____, I am going to be absent tomorrow, I am feeling very unwell (or add more words like 'weak')
2.) Ask what you can do for work tomorrow. Would I just do it tomorrow at school? or will he/she assign you work online.
Example:
"Hello Mr/Mrs. _____, I am going to be absent tomorrow, I am feeling very unwell and weak, is there anything you would want me to do for schoolwork, like online, or at school tomorrow?
3.) Add a thank you or a polite ending to your email.
Example:
Hello Mr/Mrs. _____, I am going to be absent tomorrow, I am feeling very unwell and weak, is there anything you would want me to do for schoolwork, like online, or at school tomorrow?
Thank you, [Your name)