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
问题描述：
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
答
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。
答
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.