Is there any specific name for the bold portions of the following sentences, or for their structure?
It has been suggested that drinking water is good for your health.
It is unknown how long could this last.
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Sign up to join this communityIs there any specific name for the bold portions of the following sentences, or for their structure?
It has been suggested that drinking water is good for your health.
It is unknown how long could this last.
It has been suggested is a passive construction.
It is unknown is a clause having dummy it as its subject. The verb is copular is, and the complement is the predicative adjective unknown.