We are familiar with teaching students to chunk word parts to read words. We are also familiar with chunking words in the sentences so a student can read the sentence. If you add visualization and a picture representation the student will better understand the thoughts behind the written words. So have your student chunk a thought from a part of the sentence and illustrate that thought. They should continue until they understand what the sentence means.
Here is an example and then a blank copy for you to use as you wish.
I used the kid graphics from Kristen at First Grade Teaching.