3)One popular instance of compression with which many computer users are fam iliar is the ZiP file format, which, as well as providing com pression, acts as an archiver, storing many files in a single output file.zP文件格式就是众多计算机使用者都很 熟悉的一种普及型压缩实例,它不但提供压缩,而且充当文件存储器, 在一个ZP输出文件中就可以存放很多文件。 注释:此句是主系表句型。 One popularinstance of com pression 是主语; the zIP file format是表语; with which many computer users are familiar是介词提前的定语从句, which指代前面的 instance of compression; which, as well as providing compression, acts as an archiver, storing many files in a single output file.是非限制性定语从句, which指代前面的 the ziP file format; providing compression/Storing many files in a single output file都是这个定语从句里的状语 2021/2/20 P32021/2/20 P.3 3) One popular instance of compression with which many computer users are familiar is the ZIP file format, which, as well as providing compression, acts as an archiver, storing many files in a single output file. ZIP文件格式就是众多计算机使用者都很 熟悉的一种普及型压缩实例，它不但提供压缩，而且充当文件存储器， 在一个ZIP输出文件中就可以存放很多文件。 注释：此句是主系表句型。One popular instance of compression 是主语；the ZIP file format 是表语；with which many computer users are familiar是介词提前的定语从句，which指代前面的 instance of compression；which, as well as providing compression, acts as an archiver, storing many files in a single output file.是非限制性定语从句，which指代前面的the ZIP file format；providing compression和storing many files in a single output file都是这个定语从句里的状语