Two kilos of apples中,apples为什么要加s?

Two kilos of apples中,apples为什么要加s? 2公斤苹果用英语怎么说?是two kilos of apple还是two kilos of apples? 1 two kilo of apples 2 two kilos of apples 3 two kilos of apple 4 two kilo of apple主要解释为什么?越详细越好. Two kilos of apples and three kilos of oranges.It's $ 10 ( )(together).适当形式完成句子 1、翻译：它穿在你身上非常漂亮2、We need [two tilos of] apples.(对中括号里的部分提问)3、He buy [two kilos of] salt..(对中括号里的部分提问) 英语根据答语写出问句1.____________________________?Thank you.I want two kilos of meat,please?2.____________________________?About twenty kilos of apples,please. 33.--- The apples look _____ I’ll take two kilos of them.为什么?说出理由!A.good B.well A:_______are the apples?B:Two and a half kilos. He bought 3 ＿＿ A.kilos apple B.kilos apples CHe bought 3 ＿＿ A.kilos apple B.kilos apples C.kilos of apple D.kilos of apples 为什么选B呢? 英语翻译翻译：1 is that all?2 yes,i think so.3 ok,two kilos of apples,three bags of salt and six bottles of milk. We want two kilos of( ),please two kilos. 为什么one kilos of apples中apple要加s是因为一千克苹果不只一个苹果吗? There are two kilos of beef on the plate.(对two kilos of beef 提问） I’d like two kilos of rice.（对划线部分提问） two kilos of rice I'd like to have two kilos of rice.对two kilos of 提问 two kilos of mango 还是two kilos of mangoes能说出为什么就更好了! I would like two kilos of fish .对two kilos of 提问.....you like?