In the case of this sentence we have an example of a <em>Passive Voice Sentence: </em>
<h2>The Hawaiian Islands are also known for their lush, exotic scenery</h2>
In which the <u>verb phrase</u> is are also known. “Also” in this case is just an adverb modifying the verb phrase. This last is compounded by the verb <em>To Be</em> in the present form and the perfective form of the main verb (know).
On the other hand, in this example of the passive, the <u>Subject Phrase</u> is The Hawaiian Islands which are the recipients of the action performed in the Verb Phrase by an unknown/covert agent which is not mentioned in this sentence.
