Question

请教一个英语语法问题？

Password comparison is when the password supplied by the user is compared with the one stored in the repository.
请问这句话的句子成分如何划分？请详细说明一下，谢谢

Answer 1

Password comparison is when the password supplied by the user is compared with the one stored in the repository. 

译文：密码比较是指将用户提供的密码与存储库中存储的密码进行比较。

分析：该句主干是主 + 系 + 表结构的句子，when引导表语从句，该从句是主 + 谓 + 宾 结构的，期中，主语和宾语后各有一个【过去分词短语做后置定语】的成分，从句中的结构分析，具体如图：

Answer 2

你这句子中的when是不是用得有点问题，感觉没必要，因为没有什么时间上的表述，在这个句子中没必要用when这个引导词。直接用that就可以
Password comparison is that the password supplied by the user is compared with the one stored in the repository.
翻译:
密码比较是将用户提供的密码与存储在存储库中的密码进行比较。
Password comparison(主语)
is(谓语/be)
that(引导表语从句，整体作表语，在表语从句中，that不作成分)
the password(从句中的主语)
supplied(password的后置定语) by the user
is(从句中谓语/be) compared with
the one(从句中宾语)
stored(the one的后置定语) in the repository(从句中地点状语).

Answer 3

主干主语 password comparison
主干谓语 is
宾语从句
从句主语 the password
定语修饰从主 supplied by the user
从谓（被动语态）is compared with
从宾 the one
定语修饰从宾stored in the repository

Answer 4

password comparison是主语，is是谓语动词，when一直到最后是表语从句～～～when从句中，the password是主语，is compared是谓语，with the one是介词短语作状语。supplied by the user和 stored in the repository 都是定语。

Answer 5

Password comparison 是主语
is 谓语
when the password supplied by the user is compared with the one stored in the repository 作表语。。。它自己又是一个WHEN引导的从句。。