我参考过的那些文件已经归档了。
The documents that I referred to have been archived.
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referred英 /rɪˈfɜːd/|美 /rɪˈfərd/
to英 /tuː/|美 /tu/|英 /tə/|美 /tə/
解释
介词动词 refer to 在带 that 的关系从句中，介词 to 与补足语（先行词 documents）分离，搁置在从句末尾。
The documents that I referred to have been archived.
介词动词 refer to 在带 that 的关系从句中，介词 to 与补足语（先行词 documents）分离，搁置在从句末尾。