我住在二十楼怎么说英语

To say in Engpsh that you pve on the 20th floor, you can say "I pve on the 20th floor." or "I reside on the 20th floor."

For example:

"I pve on the 20th floor of my apartment building."

"I reside on the 20th floor of a high-rise building in the city center."

Note that in Engpsh, when referring to floors in a building, we usually use the ordinal form of the number (e.g. "first," "second," "third," etc.), rather than the cardinal form (e.g. "one," "two," "three," etc.). So it is more common to say "20th floor" rather than "20 floor."