The speaker uses a mic/microphone so that the audience can clearly hear him or her.
An infinitive phrase is a group of words introduced by "an infinitive", This group of words may function as a noun, adjective or adverb. In the following example the infinitive phrase is working as an adjective, since it modifies the noun "topic".
<em>The best </em><u><em>topic</em></u><em> </em><u><em>to write about</em></u><em> </em><em>is one you know well.</em>
<em> noun infinitive phrase</em>
Yes, it is.
an alliteration occurs when a series of words in a row, or close together, have the same first consonant sound.
