Jim bought an MP3 two weeks ago.(改为同义句)

Jim bought an MP3 two weeks ago.(改为同义句)
Jim bought an MP3 two weeks ago.(改为同义句)

Jim bought an MP3 two weeks ago.(改为同义句)
Jim has had an MP3 since two weeks ago.
Jim has had an MP3 for two weeks .（注意终止性与持续性动词的用法）

jim has had an MP3 since two weeks ago.