弱弱的问下英语冠词的用法,Lucy is wearing blue trousers and a red blouse.

题目

弱弱的问下英语冠词的用法,Lucy is wearing blue trousers and a red blouse.
1.Lucy is wearing blue trousers and a red blouse.的trousers是复数所以不用加a,但蓝色的裤子难道穿多条?即便是一条也应该是a pair of trousers吧?
2.She is wearing a skirt and blouse.为什么blouse前a?
第一条例句来自初中课文,第二条例句来自牛津字典,没有看错.请告知

答案

1、trousers是复数指裤子有两条腿,而不是说好几条裤子.如It‘s my trousers,谓语用is（因为指一条裤子）,要是It‘re my trousers,就是多条裤子了.一条裤子也可以用a pair of trousers2、She is wearing a skirt and ...