在英语学习中,“be used”是一个非常常见的短语,它不仅出现在日常交流中,也是各类考试中的高频考点。本文将从结构、用法入手,并通过例题和练习题帮助大家更好地掌握这一知识点。
一、“be used”的常见结构
“Be used”主要有两种主要用法:
1. 表示“被使用”
这种用法通常用于描述某物或某人被用来完成某个任务或目的。其基本结构为“主语 + be used + 动词不定式(to do)”。
- 例句:The machine is used to cut paper.
(这台机器是用来切纸的。)
2. 表示“习惯于”
当“be used”与“to”连用时,可以表示“习惯于某种状态或行为”。此时,“used”是形容词形式,其结构为“be used to + 名词/动名词”。
- 例句:She is used to living in the city.
(她已经习惯了住在城市里。)
二、例题分析
为了更好地理解上述两种用法,我们来看几个具体的例子:
例题1
The book ________ to teach children how to read.
A. is used B. uses C. was used D. using
正确答案:A. is used
解析:“The book”是句子的主语,根据句意可知这里需要表达“这本书被用来教孩子们如何阅读”,因此选择“is used”。
例题2
He ________ to get up early when he was young.
A. is used B. used C. was used D. uses
正确答案:C. was used
解析:“when he was young”表明这是过去的事情,所以要用一般过去时;同时,“get up early”表示一种过去的习惯,因此选择“was used”。
三、练习题
接下来是一些练习题,帮助巩固所学知识:
1. The new technology ________ to improve product quality.
A. is used B. use C. used D. has been used
2. They ________ to live in the countryside before they moved to the city.
A. were used B. used C. have used D. are used
3. This kind of material ________ for making clothes.
A. is used B. uses C. used D. has been used
4. I ________ to eat spicy food, but now I don’t like it anymore.
A. am used B. used C. was used D. have used
5. The pen ________ by many students every day.
A. is used B. uses C. used D. have used
希望通过以上内容的学习,大家能够更加熟练地运用“be used”的相关知识。如果还有任何疑问,欢迎随时提问!