1 How mush are they?Twenty yuans 2 What colour is the cat's eyes?这两句话哪错了3ls it time for go to school 4 How about is this dress?5 Can you see that bird on the tree?6 Nancy's parents love her very much 7 Helen and l are in different row?

1.yuan单复同形2.What colour is(are) the cat's eye(eyes)?
3.ls it time to go to school ?
4.How about this dress?
5.Can you see that bird in the tree?
6 Nancy's parents love her very much .这句没错
7 Helen and l am in different row.原标点错了

yuan是不可数名词.第二句中,你所用的谓语动词是is那么the 后部分的词或词组就是主语就应用可数名词单数或不可数名词，两句都是把S删去（YUAN 和EYE）

1、How mush are they?Twenty yuans----How mush are they?Twenty yuan
2、What colour is the cat's eyes---What colour are the cat's eyes
3 ls it time for go to school----Is it time to go to school
4 How about is this dress----4 How about this dress
5 Can you see that bird on the tree?----5 Can you see that bird in the tree?
6、Nancy's parents love her very much 这题没有错误吧（如果这里的Nancy是男的,就把her改为him）
7 Helen and I are in different row---- Helen and I are in different rows

1.yuan没有复数
2.What colour is(are) the cat's eye(eyes)?
3.ls it time for going to school ?
4.How about this dress?
5.Can you see that bird at the tree?
6 Nancy's parent love her very much .
7 Helen and l am in different row.