英语句子中This is a bag of apples.apple为什么要加s?另外chocolate是可数名词还是不可数名词?为什么有一些在量词后不用复数有一些要.就如这里apple为什么就要加s.

英语句子this bag is hers. This bag is empty.也是解释句子是用英语解释句子如：This bag is empty.改:This bag isn't full. THIS BAG IS NOT A This is a bag.( )bag is yelloy.填什么为什么? 英语句子中This is a bag of apples.apple为什么要加s?另外chocolate是可数名词还是不可数名词?为什么有一些在量词后不用复数有一些要.就如这里apple为什么就要加s. This is a big school bag.感叹句 is、bag、cheap、this,组成一个句子要句子 What is this in english?A This is a bag B It is bag C It is a bag 为什么 _______ this?A Whose is bag B Whose bag is C Who's bag D Who's is bag 英语 改复数句This is a pen.Is this your backpack?It's a black bag pascal 把英文句子中所有的字母o换成e例如：this is a bookthis is a beek Is this hers bag? this black bag is this is my bag. black broken is this bag怎么组成一个句子? 这个句子对不对：This bag is not Tom's. This is a bag对a bag部分提问__ __ this? What's this in English?A.This is a bag.B.It is bag.C.It's a bag.D.That's a bag.