闰四月，吃树叶

• 囗(frame; surround)RADICAL
• 儿(person; foot)ASSOCIATIVE

Four sides of a square frame surround two legs — the ancient form of the number four.

• 月(moon (pictograph))ASSOCIATIVE

The moon radical depicts a crescent moon with two horizontal strokes inside.

• 口(mouth; opening)RADICAL
• 乞(beg for food; ask for food)PHONETIC

An open mouth asking for food is the daily act of eating and drinking.

• 木(tree; wood)RADICAL
• 对(respond; reply)PHONETIC

Two trees standing face to face in the forest are having a dialogue.