The two friends were (so) pleased to see each other that they talked on and on happilyin the park 原因

问题描述:

The two friends were (so) pleased to see each other that they talked on and on happily
in the park 原因

so....that....因为....所以
固定句型

so that 是固定搭配

so+形容词/副词+that+从句
固定搭配
如此.以致.
too...to...也是固定搭配