尝试修改如下：

The economic growth of India has lost its shine. Such a high growth rate as 5.7%, which would be welcomed by most countries, is a drawback for a country that recently boasted that its economic growth rates were higher than those of China. The deceleration of its economic growth has thrown light on the deep fragibility that cannot be concealed by any allegations.What lessons the India government can draw from it and how it will respond to it will determine the country's economic scene and the prospect of the long-term economic growth.

1 增长率用growth rate。such后应该接名词而不是形容词。

2 which is welcomed改为虚拟语气which would be welcomed。nations改为countries。

3 China改为those of China。比较对象是两国的增长率。

4 decelerating改为名词deceleration。

5 has threw改为has thrown.

6 frangibility拼写错误。

7 boasting现在分词作定语改为定语从句，recently这个状语的位置就好处理了。

8 个别限定词的使用问题。