clause

一个句子必须包含至少一个独立分句。

A sentence must contain at least one independent ___clause.

在“我到了就给你打电话”这句话中，“当我到达时”这部分是一个从句。

In "I'll call you when I arrive," the part "when I arrive" is a dependent ___clause.

写完主句后，他又添加了一个从句来补充更多细节。

After writing the main clause, he added a subordinate ___clause to provide more detail.