require有让;允许;假设等意思，那么你知道require的过去式是什么吗?下面跟着小编一起来学习一下，希望对大家的学习有所帮助!

require的过去式及其他时态：

过去式: required

过去分词: required

现在分词: requiring

require的用法：

require的用法1：require的基本意思一是“需要”,二是“要求”,可用于明确表示因事物的内在必要性所引起的迫切需要或当务之急,也可用于指法律和规章制度的强制要求,还可用于形势紧急的迫切性。引申可作“规定”“想要”解。

require的用法2：require是及物动词,接名词、代词、动名词、动词不定式或that从句作宾语,也可接以动词不定式或that从句作直接宾语的双宾语。

require的用法3：require接含有被动意义的非谓语动词时,不定式表示被动结构,而动名词表示主动结构; require接that从句时从句中的谓语动词要用虚拟式。

require的用法4：require后面接人时,可接介词of或from,接of表示“对…本身的要求”,接from表示“从…要求”; 后面接物时,则要用介词for。

require的用法5：require的过去分词required可用作形容词,在句中作定语。

require的过去式例句：

1. The demand generated by one factory required the construction of another.

一家工厂产生的需求使得必须再建造一家工厂。

2. Interest is paid monthly. Three months' notice is required for withdrawals.

利息按月支付。提款须提前3个月通知银行。

3. Unions are required to give seven days' notice of industrial action.

工会组织劳工行动应提前7天作出声明。

4. She suffered from anaemia and even required blood transfusions.

她患有贫血症，甚至需要输血。

5. It was exacting work and required all his patience.

工作很艰巨，需要他有极大的耐心。

6. Just how much kneading is required depends on the sort of flour.

需要揉多久取决于用哪种面。

7. The machine automatically downloads the required information to his or her fax.

机器能自动将需要的信息下载到传真机上。

8. Further scans are required to confirm the diagnosis of an abnormality.

需要进一步扫描来确诊是否出现异常病变。

9. The required technology is probably still two years off.

所需技术可能还要两年才能开发出来。

10. Demand picked up and a reprint was required last November.

由于需求量上升，去年11月，再版已是势在必行。

11. It didn't reach required standards of safety and seaworthiness.

它没有达到安全性和适航性的规定标准。

12. I was required to hold out my arms and flex my pectorals.

我被要求伸展手臂，收紧胸肌。

13. The drive required going down a quite twisty road.

开车的话需要走一段非常蜿蜒曲折的下坡路。

14. To minimize collateral damage maximum precision in bombing was required.

为了尽量减低附带性破坏，轰炸须做到最大程度的精确。

15. At the required level of visual verisimilitude, computer animation is costly.

要使电脑动画的视觉效果达到要求的逼真程度，花费会十分昂贵。