demonstrate

['demənstreit]

vt.证明, 演示, 示范
vi.示威

例句与用法：

She demonstrated that 2 and 2 are four.

她证明2加2等于四。

Please demonstrate how the machine works.

请示范机器的使用方法。

词形变化：

动词过去式: demonstrated | 动词过去分词: demonstrated | 动词现在分词: demonstrating | 动词第三人称单数: demonstrates |

详细释义：

vt.

1. 论证, 证明[+(that)]

The lawyer demonstrated that the witness was lying.

律师证明证人在说谎。

2. (用实验, 实例等)说明, 教[+wh-]

The doctor demonstrated the harmful effects of tobacco.

医生用实例说明烟草的有害副作用。

3. 示范操作(产品), 展示

The salesperson demonstrated a new washing machine.

推销员当众演示新式洗衣机的优点。

4. 显示, 表露

This fully demonstrates their willingness to cooperate.

这充分表明他们愿意合作。

vi.

示威, 举行游行示威[(+against)]

The workers demonstrated for higher wages.

工人示威要求加薪。