Docster TP #15

On Wednesday I met with Hector at CIES. He had some grammar homework to complete involving the present perfect tense, so I helped him complete the exercise. I also clarified the difference between simple past and present perfect. We finished relatively early so we completed another exercise involving prepositions. Hector was surprised to learn of the number of prepositions, but when he saw the relationship between their usage, he did not seem too worried.