He finished writing the story 2 days ago./ It is important to learn English well.
问题描述：
He finished writing the story 2 days ago./ It is important to learn English well.
第一句为何不可以用to write the story,而第二句为什么不可以用learning English.
答
1.finish doing sth是固定搭配,没有finish to do sth
2.it's + adj + to do sth是固定句型,不能用doing sth