b
1 be said to have done sth :發(fā)生在謂語動詞之前,to是動詞原形的標志,所以to后面用動詞原形
2 be said to +動詞原形
3 相同的結構還有
be thought to
be believed to + do / be done
be reported to + be doing
be considered to + have( been) done
be known to
be found to不是說句子里有兩個謂語動詞時先發(fā)生的用had done嗎？你好。因為有了謂語動詞，比如說，be found to ，后面就要用完成式的原形：I find that he was here last week.--------- == He is found to have been here last week.(仔細研讀，你就明白了。祝你愉快。)