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.

1:Are those your backpacks？
2:We are English teachers.
3:What color are they？
4:Are you in Class One？
Yes，we are.

RELATED INFORMATIONS

1. 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.
2. 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
3. 英語特殊單數變複數單複數同形複數名詞變複數
4. neither of後面加單數還是複數
5. Either of **和neither of **是單數還是複數？
6. A lot of後面加名詞複數還是單數還是都可以？我在美式詞典中看到下麵解釋例子 windy/windi/adjective wind·i·er；wind·i·est 1:having a lot of wind▪；It's a windy day.▪；It's windy outside.▪；a windy part of the country 2:using too many words▪；He gave a long，windy speech.▪；a windy politician 1wind/ˈ；wind/noun plural winds 1:a natural movement of air outside [count] ▪；The storm was accompanied by northerly winds.▪；A gusty/light wind rustled the leaves.▪；strong/hard winds [noncount] ▪；The wind is blowing hard.▪；There isn't much wind today.—see also crosswind，downwind，headwind，tailwind，trade wind，upwind，whirlwind 1.2.3等數位後面緊跟的是英語詞典解釋，號後面是例子。 1:having a lot of wind 1wind/ˈ；wind/noun plural winds 1:a natural movement of air outside [count] wind是可數名詞，有複數形式。
7. a lot of後面跟（可數）名詞複數，還是（可數）名詞單數？
8. lots of/a lot of後面接可數名詞時謂語用複數，接不可數名詞時，謂語用單數.這句話舉個例子
9. “文具”的複數是？是stationery還是stationeries？
10. stationery的複數形式
11. this的複數是什麼？
12. Tomorrow this international tour g______will arrive in Moscow.
13. 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！
14. Is that a photo？的複數形式
15. 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.
16. cousin，this，photo，family，that，parent，boy，friend，sister，he，這些單詞的複數形式求救sos
17. He is my cousin.（複數）
18. Is that her English book？複數形式
19. 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）
20. is that her counsin的複數形式