类似shorts,pants的词一般只用复数,因为他们是成双成对的。他们作主语是动词用复数(are)但是如果在前面有pair 之类的词就要用单数(is)。例如:1) The pants are blue.
2) This pair of pants is blue.
shorts,pants,是复数形式,当它的前边有these,the修饰时谓语动词用复数。如:These pants look nice.当它的前边有量词短语修饰时,要看数量词。如:A pair of pants is not enough.These two pairs of shorts feel soft.
前面有a pair of就用单数,其它都用复数