1. in meeting with/ to give gifts : In the first sentence, you use continuous (meeting), so "in giving gifts" would make the paragraph more grammatically consistent. Also: ...to the principal, Campus tour and School Carnivals guide(s). 2) Personal interpreter in 2 days: Inform and explain the day's schedule, designed games with members for having fun and helping elementary school students to learn English, Always pay attention to the need for members to help. In the above sentence, did you mean you were a personal interpreter for 2 days? If so, here's a possible rewrite: I was a personal interpreter for two days, organized and explained the day's schedule, designed games for members to have fun, and helped elementary school students learn English, always paying attention to the needs of the members. And for fun: Please help me translate the above sentences into formal English. Thank you. Hope that helps. I'm off to a food fair to make sushi!