Summer house:
夏天的房子 ×
避暑山庄 √
例句：
He visited his friends at their summer house on the river.
他拜访了住在河畔避暑别墅的朋友。
Summer school:
夏天的学校 ×
暑期班 √
例句：
There will be a summer school this term.
这学期会有暑期班。
American as apple pie:
像是苹果派的美国 ×
地道的美式风格 √
例句：
Jeans are as American as apple pie.
牛仔裤极具美国特色。
