pants、shorts、trousers单复数

trouser和pants的区别?RT. pants、shorts、trousers单复数 shorts shoes pants sweater 哪个不同 pants 与shorts 有何区别 pants,shorts,jeans,trousers这些为什么要加s pants shorts trousers 的区别多一点.只等一小时 pants和shorts以及trousers的区别是什么, pants 的ts读此还是S?还有一个是shorts pants 怎么念? this ()is small ,do you have a big one?A sweaters B skirt C trouser D shorts选哪一个? shorts, 为什么trousers,pants,shorts,glasses表示又一时不是another one而是another pair呢? shorts pants trouses 区别说法很多,有没有比较权威的? 为什么短裤用英语说可以是pants,又可以是shorts 连词成句 (1):30dollars yellow the also shorts are (2):for sell 30yuan we pants only 连词成句 (1):30dollars yellow the also shorts are (2):for sell 30yuan we pants only 同义词转换１．These are shorts pants.These pants ( ) ( )2.This box is small.This box( ) ( )１．These are shorts pants.These pants ( ) ( ) 2.This box is small.This box( ) ( ) 3.How much is the pencil?( )the( )of the pencil.4.Let's have a look 用30元,yellow,the,also,shorts,are造句2.you,bags,sports,need,do,for造句3.for,sell,30yuan,we,pants,only造句 on sale 的用法我不懂为什么说 pants and shorts on sale 但是 Many pants and shoes are on sale.on sale 的前面加are吗?什么情况下加are?