感知以下句子,完成方框下的小题
1.Much has been written about the wonders of the World Wide Web.
2.People’s lives have been changed by online communities and social networks.3.Many people have been helped by the club.
4.Jan’s life has been greatly improved by the Internet.
5.A kind of new PC has been built with more functions.
1.以上句子中所使用的时态和语态是现在完成时的被动语态。
2.现在完成时的被动语态的构成为:have/has been+过去分词