想要他帮我学数学 He helped me want mathematics
帮他学数学
Help him with his maths
以上为机器翻译结果，长、整句建议使用 人工翻译 。
他帮我学英语，作为回报，我帮他学数学。
He taught me English, and I helped him with maths in return.
youdao
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