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H M Posted 13 years ago
Grammar

Do these sentences sound natural?

1) Your teeth must/shoud be clean all the time.
2) Your teeth must/should be clean any time.

In 1)&2), clean is used as adjective.

But if I use clean as a verb,

Can I say like this?
3) Your teeth must/shoud be cleaned all the time/any time.
or 4) Your teeth must/shoud always be cleaned.

But, if I use clean as a verb, I feel like it sounds you have to clean your teeth every after you eat or drink something.
So, I think slightly the meaning is different.

5) Your teeth must/should always be kept clean.
6) Your teeth always must/should be kept clean.

Do they sound to have the same meaning?
If not, can you tell me what kinds of nuances are different?

Thank you in advance,
M
  

Top answer

Hello, H M—and welcome to English Forums. These sound correct and natural: Your teeth should be clean all the time. Your teeth should be cleaned twice a year Your teeth should be brushed twice a day.

  • Hello, H M—and welcome to English Forums.
  • These sound correct and natural: Your teeth should be clean all the time.
  • Your teeth should be cleaned twice a year Your teeth should be brushed twice a day.
  • Your teeth should always be kept clean.
  • The others are odd or wrong.
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15 Answers
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Hello, H M—and welcome to English Forums.

These sound correct and natural:

Your teeth should be clean all the time.
Your teeth should be cleaned twice a year
Your teeth should be brushed twice a day.
Your teeth should always be kept clean.

The others are odd or wrong.
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Hello Micawber,

Thnaks a lot for your reply!
I really appreciate your help!

I understand but can I ask one more thing?
You mean, if I use "must", the sentences sound odd?
Only "should" sounds natural??

Thank you!

M
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Yes, 'must' sounds a bit strong to me. We may treat our own teeth however we wish.
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I got it. Thanks a lot for your quick reply!
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Good morning,

How are you today?

BTW,
I have one more question...about adverbs.

Can I say:
Your teeth should always be clean.
Your teeth sould be kept clean all the time.

I mean, can I switch "always" and "all the time" in the sentences above?

Thank you in advance,

M
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H MI mean, can I switch "always" and "all the time" in the sentences above?
Yes, that's fine.
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Thank you very much!!!
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Hello, Mister Micawber
Mister MicawberYour teeth should be clean all the time.
here, 'clean'
Mister MicawberYour teeth should be cleaned twice a year
here, 'cleaned'
I am confused. Could You please explain me that why this is happened?
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'Clean' is a sanitary condition.
'Cleaned' is a procedure performed by a dental hygienist.
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Thanks, Mister Micawber.
I got it.

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