before and after

notice how I (a) write one very long sentence that's contextualized within the specific section it refers to; (b) explain what the section does in terms of its organization logic (i.e., compare and contrast); and then also (c) recapitulate the entire section, with the idea that a busy reader could get the picture of the entire thing without even having to go to the section if he or she needed to

but I do this in one long sentence. also notice the active verb. but what I did was put the subject as "this review." regardless, it's important to note that you can't use the first person at all (neither "I" nor "we"), and that it because the literature review wasn't written as a team, and the first person singular is disallowed by the genre

as a result, it's not as though you need two sentences, each that do different things. you only really need one good sentence that, in a way, makes the reading of the section necessary--and you need to do this for each subsection