标题: PP破解30 [打印本页] 作者: babff 时间: 2010-1-23 15:00 标题: PP破解30 30. Five fledgling sea eagles left their nests in western Scotland this summer, bringing to 34 the number of wild birds successfully raised since transplants from Norway began in 1975.
(A) bringing
(B) and brings
(C) and it brings
(D) and it brought
(E) and brought
请问题干中的raised为什么可以是过去式，不是说since前都是应该用完成时么？
TIPS
1.since+过去一个时间点： I have been here since 1989.
2.since+一段时间+ago: I have been here since five month ago.
3.since+从句： Great changes have taken place since you left.
4.It is +一段时间+since从句 ：It is two years since I became a postgraduate student.
作者: holacraig 时间: 2010-1-23 22:15
这里的raised不是过去时，而是raise的被动语态。bringing to 34 the number of wild birds（that）be successfully raised。作者: DIS 时间: 2010-1-23 22:31
好奇这题答案是什么