（These three) pieces of luggage is yours.用is对吗?还是用are.为什么?并且就画括号的提问luggage不可数 ,再多也还是单数 iswhich pieces of luggage is yours?回答者：CICI010203 - 经理 五级 2009-7-5 15:06感谢语或评

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（These three) pieces of luggage is yours.用is对吗?还是用are.为什么?并且就画括号的提问luggage不可数 ,再多也还是单数 iswhich pieces of luggage is yours?回答者：CICI010203 - 经理 五级 2009-7-5 15:06感谢语或评

（These three) pieces of luggage is yours.用is对吗?还是用are.为什么?并且就画括号的提问luggage不可数 ,再多也还是单数 iswhich pieces of luggage is yours?回答者：CICI010203 - 经理 五级 2009-7-5 15:06感谢语或评
（These three) pieces of luggage is yours.用is对吗?还是用are.为什么?并且就画括号的提问
luggage不可数 ,再多也还是单数 is
which pieces of luggage is yours?
回答者：CICI010203 - 经理 五级 2009-7-5 15:06
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(1)用are,因为对待不可数名词的单复数形式应看它的量词,如果量词为复数,则谓语动词用复数.反之,则相反.而此句中的量词是pieces,是复数,所以谓语动词应用复数are.(2)luggage不可数 ,再多也还是单数 is
which pieces of luggage is yours?以上谁说的对.用how many提问对吗?

（These three) pieces of luggage is yours.用is对吗?还是用are.为什么?并且就画括号的提问luggage不可数 ,再多也还是单数 iswhich pieces of luggage is yours?回答者：CICI010203 - 经理 五级 2009-7-5 15:06感谢语或评
用are,这是英语语法.不可用how many,how many 意思是问有多少件.而句中有these一词,表示指定的,所以用how many 不对,应用which,表示哪件,而答句是这三件,符合语境

我对我的回答100%确定！！！

用is/are都可以，这个是复数，但在句中可以看作一个整体，后面谓语用单数，对括号里提问就是which pieces of luggage is yours? 不能用how many

luggage不可数,但你用了piece，这才是重点，而且前面的These就已经说明要用are了

(These three pieces )are your luggage .就画括号提问 three pieces of clothes （These three) pieces of luggage is yours.用is对吗?还是用are.为什么?并且就画括号的提问? Randomly cut a line segment into three pieces.What is the probability that these three pieces can form a triangle?随机地将一直线段分成三段.这三段可以形成三角形的概率为多大？ （These three) pieces of luggage is yours.用is对吗?还是用are.为什么?并且就画括号的提问.用how many提问 为什么three pieces of bread不对呢 Jack's friend gave him three pieces of advice.（对three pieces of进行提问）Jack's friend gave him three pieces of advice.（对three pieces of进行提问） Three pieces of bread _____ (be) on the table. There --------- three pieces of meat .到底填 is 还是are 英语：you will hear three pieces of recorded material 2 he give me three pieces of paper改被动 three pieces of paper_ _ _ me by him （These three) pieces of luggage is yours.用is对吗?还是用are.为什么?并且就画括号的提问luggage不可数 ,再多也还是单数 iswhich pieces of luggage is yours?回答者：CICI010203 - 经理 五级 2009-7-5 15:06感谢语或评 These three thin youths think of math . three these th发音相同吗 These three thin youths think of math THese potaoes are three yuan a kilo 1、These children come from three (country). I like these three songs thanks baby