我对自己的考试成绩相当满意。

Wǒ duì zìjǐ de kǎoshì chéngjì xiāngdāng mǎnyì.

I'm quite satisfied with my own performance on the test.

这个故事相当有趣。

Zhè ge gùshi xiāngdāng yǒuqù.

This story is quite interesting.

这个问题相当复杂。

Zhège wèntí xiāngdāng fùzá.

This problem is quite complex.