it`s not good ____( learn) english by heart without knowing

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it`s not good ____( learn) english by heart without knowing how to use them
答案是learning
为什么不能用to learn?

It is no good/use doing ,it is a waste of time doing ,这都是固定用法
再问：我记得有It is not good to do这个用法的
再答：嗯，的确 no 和not 用法不同， It is no good doing ，这里的good 是名词，好处的意思，而 it is not good ，这里的good是形容词，根据惯例用法，应该是 it is+adj.+to do sth 这里应该使用to do 我想答案有问题，可能是跟我一样，看着固定句式，没有细看是no 和not 。应该是 to do。

it`s not good ____( learn) english by heart without knowing by to it's learn important english heart words 14.It is no good ____ English without speaking English. 为什么it‘s not easy to learn english well而不是good. it's a good idea____flashcard to help us learn english. It's a good idea to learn English () group It's important ____(not go) to school without breakfast it's a good chance ____(learn) from others It's not easy _____(learn) English well. 英语翻译Sometimes i find it hard to learn English words by heart It's not difficult ____(learn) to skate. 翻译：you should learn it by heart