同学你好，该知识点来自沪江网校《大学英语四级高效备考【2024年6月】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

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Its eyes were very big with bright. 这里可以改为 Its eyes were very big and bright.
Its head was triangle shape. 可以改为 Its head was triangular in shape.
Its legs were under its body. 这一句可以稍作调整，比如 Its legs were positioned beneath its body.
Its two front legs were strong ans powerful. 这里有一个拼写错误，ans 应该是 and。
I fed mantis with a live grasshopper. 这里可以改为 I fed the mantis with a live grasshopper.
As soon as it saw the grasshopper, mantis stood up in high spirit, it bit the wings of grasshopper with his mouth at once, at a short time, it would eat it. 这一句可以重写为 As soon as it saw the grasshopper, the mantis stood up in high spirits, bit the wings of the grasshopper with its mouth, and in a short time, it devoured it.
Mantis was so strong, it can protect our crops. 这里可以改为 The mantis was so strong that it could protect our crops.