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be helpful to sb.和be helpful for sb.哪個正確？

生活百科helpful

都正確，都有"有助于"的意思 。
1、be helpful to sb ，對…有幫助的
He is always very helpful to his mother.他對他母親總是很有幫助 。
【be helpful to sb.和be helpful for sb.哪個正確？】This dictionary is very helpful to your English study.這部詞典對你學習英語很有幫助 。
2、be helpful for sb，對....有益
Don't throw it, it is helpful for us to repair the bike.別扔了它,它對我們修自行車有幫助 。
It was helpful of you to do that.你那樣做真是助人為樂之舉 。

be helpful to sb.和be helpful for sb.哪個正確？


1、be helpful in doing sth. 對做某事有幫助
例：We hope this leaflet has been helpful in answering your questions.我們希望這個宣傳單可以幫助您找到您想要的答案
2、it is helpful (for sb) to do sth 有好處的
例： It is helpful to discuss your problems with your friends.-跟你的朋友們聊聊你遇到的問題是有好處的 。
3.be helpful 有幫助的
例：She is intelligent, outgoing and helpful. 她聰明、開朗、樂于助人 。
參考資料：百度百科——helpful

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