B: I have been to Beijing.

　　B：我去過北京。

　　Staff have been retrained to use the new technology.

　　為使員工學(xué)會(huì)運(yùn)用新技術(shù)，對(duì)他們進(jìn)行了再培訓(xùn)。

　　Several computer engineers have been contracted to the finance department.

　　有幾位計(jì)算機(jī)工程師與財(cái)務(wù)部門簽訂了合同。

　　I must have been insane to agree to the idea.

　　我肯定是犯傻了，居然同意了這個(gè)想法。

　　Six theatre companies have been selected to take part in this year's festival.

　　已選定六個(gè)劇團(tuán)參加今年的戲劇節(jié)。