HOW – how does the author present their ideas (i.e.  provide an example of a quotes or literary technique)  

WHAT – what idea is the author trying to convey (i.e. what is the author saying about the topic)

WHY – why does the author phrase something in a particular way AND why does this link to the topic 

Here is an example of a 2 x HOW-WHAT-WHY, with a comparative sentence joining the two. And although the exact form of comparison can differ (you can choose a variety of approaches), below is just one possible way of comparing. 

In (the first text), the characters are deprived of basic  human rights and were equated with “stocks” and “chattel,” highlighting the consequences of entrenched racism.  Mirroring the lack of freedom given to the characters in the (first text), the (second text) uses a stand-up comedy styled scene, which illustrates the absurdity of the limitations that society imposes on those “deemed inferior” 

The underlined sentence in blue shows a comparison of one aspect between the two texts. It is best to avoid generic terms such as “Similarly” or “Contrastingly” and instead specify what exactly is similar or contrasting e.g. “Similar to the hopeless nature of resistance in the first text, the second text also says that…”