Your help has been very valuable.help为什么不加s

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Yourhelphasbeenveryvaluable.help为什么不加sYourhelphasbeenveryvaluable.help为什么不加sYourhelphasbeenveryvalua

Your help has been very valuable.help为什么不加s
Your help has been very valuable.help为什么不加s

Your help has been very valuable.help为什么不加s
因为help是不可数名词,而且就算假设help是可数名词,可以加s,但是你有没有发现has been 已经提醒你了那不能是复数哦.