标题: OG90 [打印本页] 作者: zrona 时间: 2003-5-9 01:06 标题: OG90 90. Since 1986, when the Department of Labor began to allow investment officers' fees to be based on how the funds they manage perform, several corporations began paying their investment advisers a small basic fee, with a contract promising higher fees if the managers perform well.
(A)investment officers’ fees to be based on how the funds they manage perform, several corporations began (B)investment officers’ fees to be based on the performance of the funds they manage, several corporations began (C)that fees of investment officers be based on how the funds they manage perform, several corporations have begun (D)fees of investment officers to be based on the performance of the funds they manage, several corporations have begun (E)that investment officers' fees be based on the performance of the funds they manage, several corporations began
Wy the answer is D, I think it is wrong when we use "have begun".
Thanks! 作者: siebel 时间: 2003-5-9 04:24
刚答完，看楼下7-8个，xiaoyi的帖子。作者: bigdog1220 时间: 2004-11-22 15:35
begin - present tense began - past tense begun - past participle
why use "have begun" but not "have began" for present perfect tense? Myunderstnading for present perfect tense = has/have + past tense?
请 指教. 作者: bigdog1220 时间: 2004-11-24 13:19
up! 作者: bigdog1220 时间: 2004-11-27 12:53
再顶!作者: joe11 时间: 2004-11-28 08:08
Since 1986, 怎能不用完成时呢？作者: bigdog1220 时间: 2004-11-28 13:59
Thx joe11. then when to use "have/has began"? or "have/has began" never will make sense?