These three college students are real heroes because they risked ______their own lives in order to save the drowning boys in the water.A.having lost B:to lose C.losing D.of losing是risk doing形式,为啥选a不行,不是过去发生的事吗

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/15 04:54:49
These three college students are real heroes because they risked ______their own lives in order to save the drowning boys in the water.A.having lost B:to lose C.losing D.of losing是risk doing形式,为啥选a不行,不是过去发生的事吗
xQN@MCܛ^mc!qWhM0@A #QDctƭqclfs{Gͦu!B&!NNC˱0EҘ!9I `%-X`y4,LC4&i!)X 2e^I>*v`aN aQ[/)tsp܋AG>%unjx *x_ypRoMN?hi+},?i^ ~=d6߿gHs] .h<{/(݌HiM&BzbTA8$h? 8&,Ra"8Ӓkxa.N*#׮?ysqX3|z} +yuEtG?u*)

These three college students are real heroes because they risked ______their own lives in order to save the drowning boys in the water.A.having lost B:to lose C.losing D.of losing是risk doing形式,为啥选a不行,不是过去发生的事吗
These three college students are real heroes because they risked ______their own lives in order to save the drowning boys in the water.
A.having lost B:to lose C.losing D.of losing
是risk doing形式,为啥选a不行,不是过去发生的事吗

These three college students are real heroes because they risked ______their own lives in order to save the drowning boys in the water.A.having lost B:to lose C.losing D.of losing是risk doing形式,为啥选a不行,不是过去发生的事吗
因为如果使用完成时态,不能用risk having done,而应该用 have risked doing这样的形式.

这里只要用一般过去时就可以了。
如果要用完成时,那也是在risk前面加had就好