Sales of CDs have greatly increased since the early 1990s, when people_____to en - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

Sales of CDs have greatly increased since the early 1990s, when people_____to enjoy the advantages of this new technology.

A．begin

B．began

C．have begun

D．had begun

答案

解析

本题考时态和句子结构。句中when是关系副词，引导定语从句，修饰the early 1990s。从句的意思是：当时（指in the early 1990s）人们开始喜欢这一新科技带来的好处。讲的是过去发生的事，与现在无关，排除A、C。从句中有表示过去具体时间的状语（when相当于in the early 1990s），不能用过去完成时。

核心考点

试题【Sales of CDs have greatly increased since the early 1990s, when people_____to en】；主要考察你对一般现在时等知识点的理解。[详细]

举一反三

—_______you _______him around the museum yet?
—Yes.We had a great time there.

A．Have;shown

B．Do;show

C．Had;shown

D．Did;show

题型：不详难度：| 查看答案

More patients ___________ in hospital this year than last year.

A．treated

B．have treated

C．had been treated

D．have been treated

题型：不详难度：| 查看答案

They _______ on the program for almost one week before I joined them, and now we ________ it as no good results have come out so far.

A．had been working; are still working	B．had worked; were still working
C．have been working; have worked	D．have worked; are still working

题型：不详难度：| 查看答案

Cathy is taking notes of the grammatical rules in class at Sunshine School， where she　　　　English now.

A．studies

B．studied

C．is studying

D．was studying

题型：不详难度：| 查看答案

The flowers were so lovely that they __________ in no time.

A．sold	B．had been sold
C．were sold	D．would sell

题型：不详难度：| 查看答案

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