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> China Business Daily reported the 60% discounts on some Beijing-shanghai flights have now slipped ba
China Business Daily reported the 60% discounts on some Beijing-shanghai flights have now slipped ba
题目简介
China Business Daily reported the 60% discounts on some Beijing-shanghai flights have now slipped ba
题目详情
China Business Daily reported the 60% discounts on some Beijing-shanghai flights have now slipped back to 20% _______ one day in advance.
A.when books
B.when to book
C.when booking
D.when booked
题型:单选题
难度:中档
来源:不详
答案
D
试题分析:考查状语从句的省略。当状语从句的主语与主句的主语一致,且状语从句中有系动词be的时候,可以把状语从句的主语和be动词一起省略。本题在when和booked之间省略了it is;句意:如果提前一天预订,从北京到上海的机票折扣从百分之60下降到百分之20.故D正确。
点评:当状语从句的主语与主句的主语一致,且状语从句中有系动词be的时候,可以把状语从句的主语和be动词一起省略。如果状语从句中有it is的时候,it is 也可以省略。
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题目简介
China Business Daily reported the 60% discounts on some Beijing-shanghai flights have now slipped ba
题目详情
答案
试题分析:考查状语从句的省略。当状语从句的主语与主句的主语一致,且状语从句中有系动词be的时候,可以把状语从句的主语和be动词一起省略。本题在when和booked之间省略了it is;句意:如果提前一天预订,从北京到上海的机票折扣从百分之60下降到百分之20.故D正确。
点评:当状语从句的主语与主句的主语一致,且状语从句中有系动词be的时候,可以把状语从句的主语和be动词一起省略。如果状语从句中有it is的时候,it is 也可以省略。