[原创]求教一道小小语法题,望各位大侠指点一二

shanshangao

Perhaps the most significant postwar trend was the decentralization of cities throughout the United States, ___________ When massive highway-building programs permitted greater suburban growth.

答案:a phenomenon that accelerated.

我觉得that后面应该引导一个从句阿,怎么只是一个动词呢?希望大牛们不吝赐教!

enjoylife517

a phenomenon that accelerated 这里是同位语从句，that做从句的主语。

shanshangao

谢谢指点!