What is the function of the prepositional phrase?

这个介词短语的作用是什么？

In one sentence, at most one prepositional phrase is allowed.

在一个句子里，最多只能有一个介词短语。

A prepositional phrase is one where a preposition carries an object.

介词结构(也叫介宾词组)是由介词带着宾语构成。

If they are followed by a prepositional phrase, it must have a particular preposition.

如果后接介词短语，则必须用特定的介词。

The prepositional phrase those express manner, instruments, locative and object can form manner adverbial.

表示方式义及工具、处所、对象等语义的介词结构也可以构成方式状语。