predecessorですが、歴代の前任者ということでpredecessorsがよく使われます。0:18 more than all his predecessors'（彼の前任者すべてがのやったことよりも多い）
http://www.youtube.com/watch?v=w-HUNRfJTkw 4:51 virtually all of his(obama's) predecessors オバマとほとんど全ての歴代大統領たち
http://www.youtube.com/watch?v=0ElG2i7q-x0 1:16 後任者はsuccessor/sと呼ばれます。
http://www.youtube.com/watch?v=_vfzBqQlG3c 1:55 mac book air improves from its predecessor. マックブックエアーは前のモデルよりは進化した
http://www.youtube.com/watch?v=NAtgyCUsE6A 0:44
http://www.youtube.com/watch?v=e9Gy35xFQKM 0:44 at 6 feet tall, NASA's newest rover is twice the size of its predecessor. 180センチの大きさで、この探索車両は前回の倍の大きさになった。
http://www.youtube.com/watch?v=XzviCCiQ6Mw 4;58 I want all of you to realize how big a job, how hard a job, it is—not for my sake, because I am stepping out of it—but for the sake of my successor. 後任
http://www.youtube.com/watch?v=uAFnTM5qChQ 5:07 I want to thank my predecessor for all he has done to heal our land.
練習問題解答
a-5239 my predecessor
a-9204 trump's predecessors' comments
a-9943 several of your predecessors
