fever “发烧”。since “ 自……以来”。
I started running a fever last night.
这里的run指“发（烧）”。
Last night I started getting a fever.
我的胃不太舒服。
Something is wrong with my stomach.
（我的胃不太舒服。）
Maybe it's something you ate.
（也许你吃了什么不干净的东西。）
wrong with ... “……的情况不好”。stomach “ 胃”。
My stomach feels awful.
awful “糟糕的”。
My stomach is upset.
这里的upset指“ （胃）痛的”。
我的胃很痛。
I have a bad stomachache.
（我的胃很痛。）
I'll get some medicine.
（我给你拿些药来。）
stomachache 指“ 胃痛”、 “腹痛”。如果是稍微有点痛则用slight代替bad。
get “取来”、“拿来”。
I have a terrible stomachache.
terrible “严重的”、 “极为糟糕的”。
I have a severe stomachache.
severe “ （痛苦等）很严重的”、 “激烈的”。
我肚子疼。
I have an upset stomach.
（我肚子疼。）
Perhaps you should go home early.
（也许你应该早点回家。）
这里的upset指“ （胃等）不舒服的”。
My stomach is upset.
My stomach doesn't feel well.
我的肩膀酸疼。
My shoulders are stiff.
（我的肩膀酸疼。）
That could be from tension.
（也许是精神紧张的缘故。）
这里的stiff指“ （身体）发僵的”。
I have stiff shoulders.
I have a lot of stiffness in my shoulders.
我全身都疼。
How was golf yesterday?
（昨天的高尔夫球打得怎么样？）
I ache all over.
（我全身都疼。）
ache “ （无间断地）疼痛”。all over “到处”、 “全身”。
My body aches all over.
My whole body hurts.
whole “全体的”、 “全部的”。hurt “疼痛”。
你最好在病情恶化前去看医生。
You'd better see a doctor before you get worse.
（你最好在病情恶化前去看医生。）
I suppose you're right.
（我想你是对的。）
You'd better ... （= You had better ...）意思是“你最好……”， 比should的语感更强。get worse
“变得更坏”。
suppose “想”。
Shouldn't you see a doctor before you get sicker?
（你是不是该在病情恶化之前去看医生？）
I think a doctor should see you before it gets worse.
我没吃早饭。
Did you have anything to eat this morning?
（今天早上你吃东西了吗？）
I didn't have breakfast.
（我没吃早饭。）
have breakfast “吃早饭”。
I didn't eat this morning.
I didn't have anything but coffee.
（我只喝了咖啡， 别的什么也没吃。）
