1.stomach=stomachache(胃痛)
tooth=toothache(牙痛)
tummyache(肚子痛)
2.ache,名词,与身体名词构成合成名词,放在身体名词后.
S+have/has+a/an+身体名词+ache
sore,形容词,放在身体名词前,构成名词短语.
S+have/has+a+sore+身体名词.
3.what's the matter with you?
what'the trouble with you?
what's the thouble?
what's wrong with you?
what' wrong?
I have a sore throat.
I have a sore back.
I have a stomachache.
I have a cold.
I have a fever.
I have a toothache.
I have a tummyache.