初二英语、将下列句子合并为含有宾语从句的复合句1,He wants to know.Is it polite smoke during a meal in France?2,Can you tell her.Are there two or more courses for every meal in North America?3,She asks.Do i need to add more sait?4,He is not sure.Is it polite or not to speak loudly at the table in China?5,Do you know.Is it impolite or not to put the fork on the left side of the plate?

为什么上面两个都用whether呢？其实也可以用if的、
1.He wants to know if(whether) it is polite smoke during a meal in France.
2.Can you tell her if(whether) there are two or more courses for every meal in North America.
3.She asks if(whether)i need to add more salt.
4.He is not sure whether it is polite or not to speak loudly at the table in China.(因为这句中有not，所以必须用whether）
5.Do you know whether it is impolite or not to put the fork on the left side of the plate.(和上句原因相同）
不知道这样写能否理解、

1.He wants to know if it is polite to smoke during a meal in Franc.
2.Can you tell her if there are two or more coruses fo every mealin Norht America?
3.She asks if I need to add more sait?
4.He is not sure whether it is polite or not to speak loudly at the table in China?
5.Do you know whether it is impolite or not to put the fork on the left side of the plate.

1,He wants to know whether it is polite to smoke during a meal in France.2,Can you tell her whether there are two or more courses for every meal in North America.3,She asks whether she needs to add mo...

1、He wants to know whether it is polite to smoke during a meal in France?
2、Can you tell her that there are two or more courses for every meal in North America?
3、She asks whether i need to add more sait?
4、He is not sure whether it is polite or not to speak loudly at the table in China?
5、Do you know whether it is impolite or not to put the fork on the left side of the plate