Only under special conditions_____to take a make-up testA students are permitted B are students permitted C permitted are students D are permitted students 选哪个
问题描述：
Only under special conditions_____to take a make-up test
A students are permitted B are students permitted C permitted are students D are permitted students 选哪个
答
选B
Only+介词词组在句中作状语时位于句首要非完全倒装
原句 Students （are permitted） to take a make-up test 【only under special conditions】.
【】内为状语前置句首时
（）内谓语非完全倒装
答
sorry,I don't know
答
选B
原因：Only放于句首引起部分倒装.所以be动词are提前,引起部分倒装.
答
我已经赞同了楼上朋友的回答。只是稍微补充一点，即“Only+介词短语”作状语并且放于句首时，才部分倒装。如果only修饰主语，放在句首时，句子不会倒装，例如：Only you agreed that we shoul go on a picnic. "只有你同意我们应该去野餐"。