1.evidence / evidences
evidence作"证据" 解时,是抽象名词;作"迹象"解时,既是可数名词又是不可数名词。
Is there any evidence for his guilt?
There are evidences that somebody has been living here.
2.relation / relations
relation作抽象名词解时,指"联系,关联";作可数名词解时,指"亲戚,亲属"。
The cost of this experiment has no relation to the results.
All of his relations came to spend their holidays at his home.
3.property / properties
property作集体名词解时,为"(财产的)总称";作可数名词解时(通常用其复数形式),为"性能,特性;(舞台上或电影中)表演用的可移动物件"。
The police found some stolen property hidden in the chief's house.
Many plants have medical properties.
4.doubt / doubts
doubt作抽象名词表示"怀疑";作可数名词表示"怀疑的念头,疑虑"。
There is not much doubt about it.
Sudden doubts came to his mind.
5.term / terms
term作可数名词解时,表示"术语;学期"等;其复数形式,表示"措辞;条件;关系"等。
Most schools have a fall term and a spring term.
I can't accept his terms.
6.compliment / compliments
compliment作"称赞;尊敬"时,通常为可数名词(多以单数形式出现);作"致意,祝贺"时,用其复数形式。
He paid his boss a high compliment.
Give my best compliments to your parents.