Summer house:

夏天的房子 ×

避暑山莊 √

例句：

He visited his friends at their summer house on the river. 

他拜訪了住在河畔避暑別墅的朋友。

Summer school:

夏天的學(xué)校 ×

暑期班 √

例句：

There will be a summer school this term.

這學(xué)期會有暑期班。

American as apple pie:

像是蘋果派的美國 ×

地道的美式風(fēng)格 √

例句：

Jeans are as American as apple pie. 

牛仔褲極具美國特色。