
Can any be used with singular nouns in if clauses?
This site says any could also be used with singular nouns in if clauses when it means any kind of . Is it true? Are both following sentence correct? If you have any questions, please let me know.
What does if you have any question (what whatsoever) mean?
"If you have any question (whatsoever), please let me know." Here any question can be replaced with a question of any kind -> If you have a question of any kind please let me know. Just like the article states, it is used for emphasis.
Is'if you have any questions let me know'correct?
Yes, it is correct. "If you have any questions, please let me know." "If you have any question (whatsoever), please let me know." Here any question can be replaced with a question of any kind -> If you have a question of any kind please let me know. Just like the article states, it is used for emphasis.
Do you have a chance or if you had a chance?
If you have a chance vs if you had a chance. A complete search of the internet has found these results: If you have a chance is the most popular phrase on the web. More popular! If you have a chance. Some examples from the web: If you have a chance to go on the holiday, please come.

Quarantine
Quarantine and stay away from others when you have been in close contact with someone who has COVID-19.
Isolate
Isolate when you are sick or when you have COVID-19, even if you don’t have symptoms.
When to Stay Home
The date of your exposure is considered day 0. Day 1 is the first full day after your last contact with a person who has had COVID-19. Stay home and away from other people for at least 5 days. Learn why CDC updated guidance for the general public.
Quarantine
Quarantine is a strategy used to prevent transmission of COVID-19 by keeping people who have been in close contact with someone with COVID-19 apart from others.
Isolation
Isolation is used to separate people with confirmed or suspected COVID-19 from those without COVID-19. People who are in isolation should stay home until it’s safe for them to be around others. At home, anyone sick or infected should separate from others, or wear a well-fitting mask when they need to be around others.
Ending isolation for people who had COVID-19 and had symptoms
If you had COVID-19 and had symptoms, isolate for at least 5 days. To calculate your 5-day isolation period, day 0 is your first day of symptoms. Day 1 is the first full day after your symptoms developed. You can leave isolation after 5 full days.
Recommendations for Specific Settings
These recommendations do not apply to healthcare professionals. For guidance specific to these settings, see
