focus efforts on sth致力于…  宾语efforts提前，故用被动形式，构成with sth done结构。 同理构成without sth being done.without后接现在分词形式的被动。

点评：“with ＋复合宾语”结构的一般构成：

with ＋宾语＋介词短语

English lessons are broadcast every day on the radio with explanations in English and other languages．

with ＋宾语＋现在分词

In parts of Asia you must not sit with your feet pointing at another person．

with ＋宾语＋过去分词

He stood for an instant with his hand raised．他举着手站了一会儿。

with ＋宾语＋不定式

With so much homework to do，I can't go to the party tonight．由于有这么多家庭作业要做，今天晚上我不能去参加晚会。

with ＋宾语＋形容词 He usually sleeps with the windows open even in winter．即使在冬天，他也常常开着窗户睡觉。

with ＋宾语＋副词 One family lived in a house with very talltrees all round．

with ＋宾语＋名词 In the centre of London there is a tall white building with

the name“Bush House”．