define做动词有规定;限定;定义;解释等意思，那么你知道define的过去式是什么吗?下面小编为大家整理了define的过去式和用法例句，欢迎大家学习!

define的过去式和其他时态：

过去式: defined

过去分词: defined

现在分词: defining

define的用法：

define的用法1：define的基本意思是划清事物间的界限,以免混淆造成矛盾或重复,可依据上下文译成“界定”“规定”“确定”。

define的用法2：define是及物动词,跟名词或名词性从句作宾语,常用于被动结构。

define的用法3：define与as连用时,表示“把…定义为”。

define的过去式例句：

1. Sometimes a well-defined job becomes cluttered with self-imposed tasks.

有时一项职责明确的工作会因一些自愿承担的任务而乱作一团。

2. Within criminal law almost anything could be defined as "crime".

在刑法中，几乎任何行为都可以被界定为“犯罪”。

3. He thought for a moment, stroking his well-defined jaw.

他摸着自己轮廓分明的下巴想了一会儿。

4. Caste is defined primarily by social honour attained through personal life-style.

社会等级制度主要是通过个人生活方式赢得的社会荣誉来确定。

5. Louis Armstrong defined jazz pithily as "what I play for a living".

路易斯·阿姆斯特朗把爵士乐简明扼要地定义为“我一门糊口的手艺”。

6. A clearly defined track now leads down to the valley.

眼前有一条清晰可辨的小径通向山谷。

7. The proposed regulations are ill-defined and cumbersome and could be unnecessarily costly.

提议的规章制度阐述不清、复杂低效，而且可能会带来不必要的过高花费。

8. Today's pawnbrokers operate within well-defined financial regulations.

当今的典当商按照明晰的金融规章运作。

9. These categories are not well defined.

这些类别划分得不太明确。

10. The powers of a judge are defined by law.

法官的权限是由法律规定的.

11. There may be problems if responsibilities are not adequately defined.

如果责任没有充分界定,就可能出现问题.

12. It's advisable that they go with a clearly defined goal in mind.

他们去时最好在思想上有一个明确的目标.

13. The mountain was clearly defined against the light of the eastern sky.

东方天空的光芒使那座山清晰地显露出来.

14. They defined him as a rogue.

他们确定他为骗子.

15. It is ill to be defined.

很难下定义.