Bad habits, ______ formed(形成), are difficult to give up.A．andB．onceC．forD．but - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

Bad habits, ______ formed(形成), are difficult to give up.

A．and

B．once

C．for

D．but

答案

解析

试题分析：考查状语从句的省略式，英语中如果主从句的主语一致，可以省略从句的主语和be动词，once formed＝once bad habits are formed句意：坏习惯，一旦形成，就很难戒掉。选B。
点评：做这种题目可以用还原法做题，先把主语和be动词加上，再判断是主动还是被动。句意通顺才行。

核心考点

试题【Bad habits, ______ formed(形成), are difficult to give up.A．andB．onceC．forD．but】；主要考察你对倒装句等知识点的理解。[详细]

举一反三

Not only _______interested in football but ______beginning to show an interest in it.

A．the teacher himself is; all his students are

B．the teacher himself is; are all his students

C．is the teacher himself ; are all his students

D．is the teacher himself; all his students are

题型：不详难度：| 查看答案

____ back home after the party.

A．It was not until midnight did he go

B．It was until midnight that he didn’t go

C．Not until midnight did he go

D．It was midnight that he didn’t go

题型：不详难度：| 查看答案

It was announced that only when the fire was under control _______ permitted to return to their homes.

A．would villagers be	B．villagers would be
C．should villagers be	D．villagers should be

题型：不详难度：| 查看答案

Only when she reached her office____ she had left her key at home.

A．she realizes

B．does she realize

C．she realized

D．did she realize

题型：不详难度：| 查看答案

_____ entered the office when I realized that I had forgotten to bring my report.

A．I hardly had

B．Had I hardly

C．Hardly had I

D．Hardly I had

题型：不详难度：| 查看答案

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