I’ve seen both of these expressions:
A) show no sign of
B) show no signs of
Is there any rule I should know about which form I should choose?
Generally speaking, if there is one possible sign of the condition, use the singular. If there are multiple, use the plural. For example: Look for emergency warning signs for COVID-19.
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Generally speaking, if there is one possible sign of the condition, use the singular. If there are multiple, use the plural.
For example:
Look for emergency warning signs for COVID-19. If someone is showing any of these signs, seek emergency medical care immediately: