Zhè cì shíxí jīnglì duì wǒ yǐhòu de gōngzuò dàyǒubìyì.
This internship experience will be very beneficial to my future work.
Tips
history
From 《北齐书·唐邕传》 (Book of Northern Qi, Tang dynasty compilation of 6th-c. history): 「邕度支取金,大有裨益」 — describing Tang Yong's skillful budgeting as 'greatly beneficial' to the state treasury.
grammar
Pattern: 对 X 大有裨益 ('to be greatly beneficial to X'). X is the beneficiary, usually a person, group, or undertaking.