Please help :( reading.. my grades are very bad. ((?

Seriously, it would be easier if you checked each word in the dictionary/thesaurus (even online) and wrote out a small summary for each word. I used to write difficult words, with a brief description, in a small book when I was in Primary school. When you write these words out it makes it easier for you to recall them in the future. Just saying what would most likely be best in the long run for you. Good luck and try my method first.