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在《新概念英语》中，“过去”的用法出现在第二册第31课中。学生们经常把它和习惯于的用法混淆。今天，我们将一劳永逸地弄清楚它们的用法。

[自测]

让我们先做一个小测试：

"详细用法"

First, get used to it

(1)基本用法

用来做的是用来表示你过去曾经做过某件事，所以用的时候，关键是判断你要描述的动作是否发生在过去。比如：

他小时候在一家小商店工作。

前一句中的“童年”是指该动作发生在过去，所以可以翻译如下：

As a boy he used to workin a small shop.

另一个例子是：

那时他通常每天要工作14个小时。

前一句中的“then”表示动作发生在过去，所以可以翻译如下：

At that time he used to work fourteen hours a day.

(二)句子转换

Used在英语语法中也叫半情态动词，因为它既可以做情态动词，也可以做实义动词，所以在变换句型时要注意它是一种什么样的情况。

1.当用作情态动词时

此时，used的用法与can/must几乎相同。比如：

: He used to smoke when he was in college.

: When he was in college, he didn't used to smoke very often.

General questions and their answers Did he often smoke when he was in college? Yes, he did. /No, he didn't.

2.当用作实义动词时

此时，它的用法与其他实义动词相同。比如：

: He used to smoke when he was in college.

: He didn't smoke much when he was in college.

General questions and their answers Did he often smoke when he was in college? Yes, he did. /No, he didn't.

Second, get used to it

习惯有两种情况：

(a) is used to do

被用来做意味着被用来做某事，属于被动语态的用法。比如：

这个罐子是用来种花的。这个陶罐是用来种花的。

Be used to doing sth.

1.基本用法

习惯于做是指现在经常或习惯性地做某事。与习惯于做不同，习惯于做是一个介词，所以当它后面跟动词时，应该是动名词的形式。

而to在用来做的时候是不定式。比如：

When she is excited, she is used to talking nonstop. She always talks when she is excited. )

2.句型转换

与用来做不同，be用来做是助动词，所以句型转换主要是通过be的变化和调整来实现的。比如：

Affirmative sentence: I am used to drinking coffee during my lunch break.

Negative sentence: I'm not used to drinking coffee during my lunch break.

General question and its answer: Are you used to drinking coffee during your lunch break? Yes, I am. /No, I'm not.

【自测参考答案】

我们来看看试题的答案：

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