莫过于【mòguòyú】

莫过于 says nothing in a category beats the thing that follows it. The category goes first, usually built around 最, and what tops it goes after 莫过于. It belongs to writing – essays, speeches, articles. In speech you'd say 最…的就是….

What comes after 莫过于 can be a noun or a whole verb phrase.

最 is usual in the first half but not required. Without it, the category still reads as a superlative.

No 是 in front

莫 means "nothing" and 过 means "go beyond", so 莫过于 is already the verb of the sentence and already does the work of "than". It takes no 是, 就是 or 比.

• × 最难的是莫过于写汉字 → 最难的莫过于写汉字
• × 最重要的莫过于就是健康 → 最重要的莫过于健康