英语高手请进,Quite a few people used to believe that disaster ___if a mirror was broken.A.was sure of striking B.was sure of having struck D.was sure to strike可书上两句型都有：be sure /certain of sth be sure /certain to do sth还有书上说be sure 的主语只能是人,但有人又细说be sure of的主语只能是人.be sure to do主语可是物也可是人,这说法对吗?希望大家根据我问的回答啊 不要粘其他的过来 百度的解释我都看遍了还不明白才问的 感激不尽
问题描述：
英语高手请进,Quite a few people used to believe that disaster ___if a mirror was broken.
A.was sure of striking
B.was sure of having struck
D.was sure to strike
可书上两句型都有：be sure /certain of sth
be sure /certain to do sth
还有书上说be sure 的主语只能是人,
但有人又细说be sure of的主语只能是人.be sure to do主语可是物也可是人,这说法对吗?
希望大家根据我问的回答啊 不要粘其他的过来 百度的解释我都看遍了还不明白才问的 感激不尽
答
学被动句的时候老师应该讲过，主动语句中的谓语直接加宾语 的话，当变成被动语句时，也就是宾语变成主语时，谓应加上一个to,上面的句型就是这样变换来的
答
to+原型
答
那你就抛开你在百度看的,只去了解我给出的解释就好了.
disaster is sure to strike if the mirror was broken.
你可以从这个句子看出,disaster是做主语,并且是主动句的.
过去很少人相信镜子破了,灾难就会降临.
答
既然 be sure of sth ，就不是of doing sth
只能用to do