Is that her English book？複數形式

Are those her English books？

RELATED INFORMATIONS

1. He is my cousin.（複數）
2. cousin，this，photo，family，that，parent，boy，friend，sister，he，這些單詞的複數形式求救sos
3. 把下列句子改為複數：this is agirl.thatis yourcousin.thepicture is nice 把下列句子改為複數： this is a girl. that is your cousin. the picture is nice.
4. Is that a photo？的複數形式
5. 英語填空1.Tomorrow this international tour（g）will arrive in Moscow. 1.Tomorrow this international tour（g）will arrive in Moscow. 2.Betty is on dutytoday.sheis（c）the blackboard with an eraser. 3.Oh，why？You are（b）your white shoes with black shoe cream！
6. Tomorrow this international tour g______will arrive in Moscow.
7. this的複數是什麼？
8. 將下列單數句變成複數句 1.Is that yourbackpack？ 2.I am English teacher. 3.What color is it？ 4.Are you in Class One？ Yes，I am.
9. 把下列句子改成單數句或複數句 1.This is a tiger. 2.Those are eggs. 3.Is it a bottle？ 4.Are these mice？ 5.There is a sheep on the hill.
10. 英語單數變複數舉例加es的單詞變y為i加es的單詞只用於複數的單詞特殊形式（如：man）每種單詞要多一點
11. Is this your picture？（改為複數句）That is my cousin.（改為一般疑問句，並作肯定回答） These are his friends.（改為否定句） She is my mother.（改為一般疑問句，並作肯定回答） His first name is（Nick）.（對括弧部分提問）
12. is that her counsin的複數形式
13. This is my friend改為複數形式
14. this is my cousin改複數句子
15. His father and mother are teachers.（改為同義句）This is my cousin.（改為複數形式）
16. That is my sister改為複數形式This is his cousin改為複數形式I'm Mike Smith改為一般疑問句
17. This is his cousin.改為複數形式
18. rice和hair都是不可數名詞，為什麼可以a hair不可以a rice？
19. hair是可數名詞還是不可數名詞？如何用？
20. 可數名詞，不可數名詞，既是可數名詞，又是不可數名詞；