职称英语考试基础词汇重点解析42

一般过去时态基本用法

用于表示过去的某时刻或某一时期内的动作或状态。常与表明过去时间的状语连用，如yesterday, then, just now, that month, two days ago, 或由when或while等引导的表明过去时间的状语从句。

e.g. We met him last month.

e.g. They stayed at home yesterday.

e.g. He was a doctor.

一般过去时态否定结构的构成：

１）　如果谓语部分是行为动词，在构成否定结构时， 需要在谓语结构中的行为动词的前面添加助动词did和否定副词，并且需要把原来谓语部分的过去分词结构还原成动词的原形。

e.g. We met him last month.-- We didn’t meet him last month.

e.g. They stayed at home yesterday.—They didn’t stay at home yesterday.

2） 如果谓语部分是be动词， 在构成否定结构时只需要直接在be的后面添加否定副词not。

e.g. He wasn’t out yesterday.

e.g. There wasn’t anyone in the room just now. (anyone –anybody)

一般过去时态疑问结构：简单提一下:

e.g. We met him last month. – Did you meet him last month?

e.g. He was out. – Was he out?

e.g. he wasn’t out yesterday.—Wasn’t he out yesterday?

练习与体会：

（2004年理工Hurricanes）

(1)Did you know that before 1950, hurricanes had no names? (2)They were simply given numbers. (3)The first names were simply Alpha, Bravo, Charlie, etc. (4)But in 1953, female names were given because of the unpredictability (不可预知) factor of the storms.