1.sour用作形容词时的意思是“酸的”,转化为动词时意思是“变酸”,指由于某些外部因素使某物变酸或变坏,引申可表示“使产生反感”。
2.sour可用作及物动词,也可用作不及物动词。用作及物动词时,接名词或代词作宾语。

用作不及物动词
▲S+～(+A)
The milk soured when it was left in the hot sun.牛奶放在炎热的太阳下会变酸。
Her temper has soured.她的脾气变坏了。
用作及物动词
▲S+～+n./pron.
The hot weather has soured the milk.热天气使牛奶变酸了。
Their clumsy performance soured us on the play.他们拙劣的表演使我们对该剧产生反感。
Poverty has soured the old man.贫困使那位老人变得厌烦。

［同义词］ adj.  acid, sharp, spoiled, unpleasant
［反义词］ adj.  pleasant, sunny
［词源］＜古英语sur(酸)

go〔turn〕 sour
变得令人不愉快,变坏,变糟become unfavorable or unpleasant; turn out badly
This milk has gone sour.这牛奶已变酸了。

用作定语
▲～+n.
 Lemons have a sour taste.柠檬有股酸味。
The baby's clothes have a sour odor.这个婴儿的衣服有酸味。
He has a sour face.他有一张难看的脸。
用作表语
▲S+be+～
 Most green fruit is sour.大多数未熟的水果都是酸的。
She really looks sour this morning.她今天上午脾气的确有些坏。
▲S+be+～+prep.-phrase
 He is very sour to the children.他对孩子很刻薄。
用作宾语补足语
▲S+V+O+～
His disappointments have made him sour.失望使他的脾气变坏了。

sour, acid
参见acid条。