a large crowd ___widly as the pilot ___her plane safely in californiaa had cheered was landingb had cheered landedc was cheering had landedd was cheering landed 这题选d我想知道为什么c是错的

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alargecrowd___widlyasthepilot___herplanesafelyincaliforniaahadcheeredwaslandingbhadcheeredlandedcwas

a large crowd ___widly as the pilot ___her plane safely in californiaa had cheered was landingb had cheered landedc was cheering had landedd was cheering landed 这题选d我想知道为什么c是错的
a large crowd ___widly as the pilot ___her plane safely in california
a had cheered was landing
b had cheered landed
c was cheering had landed
d was cheering landed 这题选d我想知道为什么c是错的

a large crowd ___widly as the pilot ___her plane safely in californiaa had cheered was landingb had cheered landedc was cheering had landedd was cheering landed 这题选d我想知道为什么c是错的
这是关于as用法的题目.
as 引导的时间状语从句,“当...”的意思,与when等同.其主句用过去进行时,从句要用一般过去时.c was cheering;had landed错在 后半句时态不对.

landed 是定语,而不是动词,更不是过去完成时,在这是被动语态的定语,修饰the pilot 的,C中 had landed是过去完成时的构架。

a large crowd of用法crowd是人群的意思,那就是说a large crowd of后跟人?不能跟物? There are a large _____ of people in the room and it is very ____.A.crowded; crowded B.crowd; crowd C.crowd; crowded D.crowded; crowd 一大群人 是a big crowd of...还是 a large crowd of...一大群人 是a big crowd of...还是 a large crowd of...而这两者 到底有什么区别? a large crowd of people had gathered under the Town Hall是过去完成时改为过去式a large crowd of people gathered under the Town Hall对吗 翻译There was a large crowd in the square protesting against the even,in,people,i,large,crowd,know,would,a,him,of连词成句 请问a large crowd of people had gathered under the Town Hall为什么加had a large crowd of people had gathered under the Town Hall句中的had是什么意思 a large crowd of people had gathered under the town hall clock是什么式 a large crowd of people had gathered under the Town Hall是过去完成时 改为过去式 crowd作名词作主语的时候谓语是用单数还是复数?例如:“a large crowd of people”一大群人这时的谓语应该是单数还是复数? 4.The traffic accident _________ a large crowd.A.charmed B.signal C.call D.attracted 理由 一大群人 是a big crowd of...还是 a large crowd of...一大群人 是a big crowd of...还是 a large crowd of...而这两者 到底有什么区别?最近学新概念 老糊涂了……哎.2楼 你说的第一条 我明白 确实也是二者都 新概念英语第二册lesson9求解a large crowd of people gathered under the town hall clock a large crowd of people had gathered under 第一句是过去式 第二句是过去完成式对吗 There was a large crowd in the square protesting against the war.为什么protest要加ing?这是种什么用法? a large crowd of people和crowds of people一样么,如果不一样,是不是后者更多些? 英语翻译as a crowd a large crowd of people中crowd是中心词.也就是说n.+of+n.结构中前一个n.是中心词.那请问a boy of a girl解释为女性化的男孩还是男性化的女孩?盼复!