语法书上说 非谓语做定语的时候 序数词后面要用不定式 可是我看到没有用不定式的题- -

题目

语法书上说 非谓语做定语的时候 序数词后面要用不定式 可是我看到没有用不定式的题- -
The first text books written for teaching English as a foreign language came out in the 16th century.

答案

The first text books (which were) written for teaching English as a foreign language came out in the 16th century.这里 written for teaching English as a foreign language 过去分词短语,相当于一个定语从...