be helpful 的用法Chess players find that playing against a computer is helpful to improve their skills.这句话中 to improve 错在何处?是不是应改为to improving?谢Chess players find that playing against a computer is helpful to improve

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behelpful的用法Chessplayersfindthatplayingagainstacomputerishelpfultoimprovetheirskills.这句话中toimprove错在

be helpful 的用法Chess players find that playing against a computer is helpful to improve their skills.这句话中 to improve 错在何处?是不是应改为to improving?谢Chess players find that playing against a computer is helpful to improve
be helpful 的用法
Chess players find that playing against a computer is helpful to improve their skills.
这句话中 to improve 错在何处?
是不是应改为to improving?

Chess players find that playing against a computer is helpful to improve their skills.
这句话中 to improve 错在何处?
是不是应改为to improving?
for improving?
还是in improving?

be helpful 的用法Chess players find that playing against a computer is helpful to improve their skills.这句话中 to improve 错在何处?是不是应改为to improving?谢Chess players find that playing against a computer is helpful to improve
OC上的脑残弱智题=_=,我也正纠结着呢~

to 后面如果跟动词,只能跟原形
for improving: for doing something... for有“为了”的意思,好比是I'm doing this for you. 这里的for you就是“为你”的意思。

...is helpful for improving their skills.
helpful for sth.
或 helpful for doing sth.
不是 helpful to