I am feeling quite ill today. 我今天很不舒服。
“quite ill” means "very sick"
quite is a synonym（近义词）of very
ill is more commonly used in British English
ill和sick意思差不多，ill多用于英式英语
I think I am coming down with the flu.
我估计得了流感。
coming down with 患上
Eg：My throat really hurts. I think I am coming down with a cold. 嗓子痛，可能感冒了。
I have a headache, a sore throat，a runny nose and I am feeling slightly feverish.
头痛，嗓子痛，流鼻涕，感觉有点发烧。
sore酸痛
If you play tennis all weekends, you will have a sore arm/sore back/sore neck.
runny nose/running nose 很形象，奔跑的鼻子，鼻涕流下来
“call in sick”means “call your boss to tell him that you can't go to work because you are sick”打电话请病假
想象一下两个人分别打电话给老板请病假
A: I am calling to tell you that I can't go to work because I am sick.
B: I am calling in sick.
怎么样，是不是高低立现？
