In the vast South China Sea, there are four islands: dongsha islands, Nansha Islands, Xisha Islands and zhongsha islands. They have been the sacred territory of our motherland since ancient times. The beautiful and rich Xisha Islands are located in the northwest of the South China Sea. It is like a pearl embedded in a blue ocean. People call it the beautiful "Pearl of the South China Sea".

Original sentence:

In the vast South China Sea, there are four islands, Dongsha, Nansha and Zhongsha. They have been the sacred territory of our motherland since ancient times. The beautiful Xisha Islands are located in the northwest of the South China Sea. It is like a pearl embedded in the blue sea. People call it the beautiful pearl of the South China Sea.

Modifying methods of sick sentences:

1, complement grammar: it is often used to modify ill sentences with incomplete components. For example, "I won the first place in this competition" (lack of subject) was changed to "I won the first place in this competition." After listening to the teacher, I got a great education. Everyone should set up lofty ideals.

2. The deletion method is generally used to modify redundant sentences, redundant components, improper collocation and improper classification. For example, "I conclude that it may rain tomorrow." I'm sure it will rain tomorrow.

3. Variations are mostly used to modify ill sentences such as improper collocation, improper words and unclear references. For example, "his grades have improved significantly." Change: "His grades have improved obviously." Whoever breaks the discipline will be criticized.