变同义句：[1] could you please tell me where the principal is [2] eating with your mouth open is rude in Britain.[3] one disadvantage of advertisements is that they are misleading.[4] he has never had the chance to sing in front of people.[5] everybody should recycle to help save the planet.

1. I'd like to know where the principal is.
2. It is impolite to eat with your month full in Britain.
3. One drawback of the advertisements is that they are misleading.
4. He has never had the opportunities to sing in front of people.
5. Everyone oughts to recycle to help rescue the planet.

1. Would you please tell me where i can find the principal?
2. It is rude to eat with your month open in Britain.
3. Misleading is one of the disadvantages of advertisements.
4. he hasn't ever gotten a chance to sing in front of people.
5. everybody should recycle in order to help save the planet.

我的猜想是这种找同义的题目应该是尽量从原句上做文章,只是稍微改变下某些词的顺序.
否则的话,可以用无数的句子来表示相同的意思的.
[1] could you please tell me where the principal is
could you tell me where the principal is,please?
[2] eating with your mouth open is rude in Britain.
It is rude to eat with your mouth open in Britain
[3] one disadvantage of advertisements is that they are misleading.
Misleading is one disadvantage of advertisement.
[4] he has never had the chance to sing in front of people.
To sing in front of people is a chance he has never had.
[5] everybody should recycle to help save the planet.
To help save the planet,everybody should recycle.

[1] could you please tell me where the principal is ?
Can you tell me the way to the principal?
[2] eating with your mouth open is rude in Britain.
It's rude to eat with your mouth open in Britain.
[3] one disadvantage of advertisements is that they are misleading.
They are misleading is one of the advertisements
[4] he has never had the chance to sing in front of people.
He doesn't sing in front of people because he doesn't have the chance.
[5] everybody should recycle to help save the planet.
In order to save the planet,everybody should recycle.