因为“他的帮助”已经使“我”的英语提高了，所以需要用完成时态。例如：
She has helped me improve my English greatly.
She has helped me advance my English greatly.
She has helped and carried me to a new and higher level.
她帮助我大大提高了英语
She helped me improve my English greatly.
She helps to improve my English greatly.
英语的水平
She helps me to improve greatly.
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