然而,larry比我不勤奋的多。英语

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however，Larry is more hardworking than me
However/But, Larry is much less diligent than I am_
However/But, Larry is much less diligent than me.

这里的‘勤奋’要看什么场合，diligent，泛泛而言。 但如果是工作上，hard-working或laborious 更合适；而学业或研究领域，studious,更合适些。
However,larry isn‘t hader than me.
However Larry doesn't work hard than me.