1.Helen's new black pants are eihty dollars.

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1.Helen's new black pants are eihty dollars.
How much _____ the Helen's new black pants
A.are b.is
2.Jeff wants to join the chess club.
What ____ want to jojn?
A.club does b.club
这两道题有些无法确定,请说明一下原因!(特别是第二题)谢谢.

1A 由两部分构成的工具,服装,鞋等名称做主语时,位于动词用复数形式.
如：trousers,pants,shoes,glasses,scissors,goods,clothes.但当他们由a pair/suit/series/kinds 修饰时,谓语动词用单数
2A话说第二道题目少掉一个主语,does后面应该再加主语Jeff
问的是Jeff参加的是哪个俱乐部.主语是第三人称单数,所以选A.

The black pants are 28 dollars the black pants are 20 dollars 对颜色提问 1._____are those black pants?They're 15 dollars.A.How B.How The pants are 48 dollars同义句 these pants are twenty dollars 用twenty dollars 提问,快. The black pants are (Jake's).对画括号部分提问.提问用（）are the black pan Are these pants black?(改为肯定句) The blue pants are 50 dollars改为一般疑问句 The black pants are twenty yuan.—— the ——of the black pants? Where are the black pants?为什么用"are Her pants are black and mine are white. 句型转换1.The pants are （twenty dollars ）.用括号部分提问2.I want one mo