founded in 1636,harvard is one of the most famous universities in the united states 为什么用founded,动词放句不是只有to do 和doing两种形式吗?

In 1636,Harvard（哈佛大学）is one of the most famous universities in the United States.A.Being founded B.It was founded C.Founded D.Founding founded in 1990还是being founded in 1990 为啥 _____in 1636,Harvard is one of the most famous universities in the United States.A Being founded B It was founded C Founded D founding 能不能解释一下为什么选C,不能选其它的 ___ (found)in 1636,Havvard is one of the most famous universities in U.S.A.为什么要用Having founded 不用Having been found ,founded如何分析这句是不是分词的完成式? founded in 1636,harvard is one of the most famous universities in the united states 为什么用founded,动词放句不是只有to do 和doing两种形式吗? 29.________ in 1636,Harvard is one of the most famous universities in the United States.A.Being founded B.Having been founded C.Founded D.Founding为什么不能选b 不是从句动作明显先于主句完成就用完成被动式吗?要考虑in 1636 be founded in 谁能帮我造一个句啊 The PRC was founded in 1949.变主动语态.快. 高二英语语法非谓语__in 1636,Harvard is one of the most famous universities in the United States.A.FoundB.Founded C.Being founded D.It was founded 这句话意思我懂的 就是说 哈弗在1636年“被发现”那么发现的被动为什 答案是Having founded 不是Found 怎么分析___ (found)in 1636,Havvard is one of the most famous universities in U.S.A. great changes ---in china since the people's republic of china ---in 1949A.have taken place;was founded B.has taken place ;was founded C.have been taken place;founded D.took place;founded Founded in 1992,this company is good. 其中第一个单词能否换成Being founded呢,为什么? __in 1636,Harvard is one of the most famous universities in the United States.A.FoundingB.FoundedC.Being foundedD.It was founded选哪个?为什么? chicago,founded in 1800,is in many ways the nation's last great city怎么翻译? be founded in 有什么特殊含义吗?整句句子是：it is clear that the two choices are well founded in their respective way. when was our party founded.It was founded-When was our party founded?-it was founded_A.on October 1,1949 B.in May 1922 C.on july 1,1921 D.in August,1927 迅速!英语被动句式的转换!比如It was founded in 1990.它的疑问句式是:When did it be founded?还是When was it founded?快点啊,谢谢了! 英语选择题（被动语态）As in other countries.the cities of China were usually ( )where they ( ).A.found needB.founded were neededC.founded neededD.found needed