这些动物真好看的英文表达是 "These animals are really beautiful."

来源：这句话是由主语"these animals"和谓语"are"以及表语"really beautiful"构成的。"These"是代词，指代前文提到的"这些动物"；"are"是动词，表示"是"的意思；"really"是副词，表示"真正地"，"beautiful"是形容词，表示"美丽的"。

一些英文例句和中文翻译：

The flowers in the garden are really beautiful. (花园里的花真好看。)
The sunset over the ocean was really beautiful. (海上的日落真好看。)
The dress you are wearing is really beautiful. (你穿的这件裙子真好看。)