英语是:I help him with his homework, and he helps me with my study.
句子解释: help 英[help] 美[hɛlp] vt. 帮助; 有助于, 有利于; vt. 治疗; 避免; 招待(客人); 给…盛(饭、菜); n. 帮助; 助手; 补救办法; 有用; [例句]He has helped to raise a lot of money 他帮着筹集了很多钱。
homework 英[ˈhəʊmwɜ:k] 美[ˈhoʊmwɜ:rk] n. 功课; 家庭作业; [例句]Have you done your homework, Gemma? 杰玛,你做完家庭作业了吗?
study 英[ˈstʌdi] 美[ˈstʌdi] n. 学习,研究; 课题; 书房; 结论; vi. 考虑; 沉思; 默想; 努力; vt. 想出; 详细地检查; 背诵(台词等); 为…费心思; [例句]She gave up her studies to have Alexander. 为了生亚历山大,她放弃了学业。