撕毁的英文：
to tear up
to rip up
too shred

参考例句：

To tear up the letter
撕毁一封信

He accused the government of tearing up(ie repudiating)the negotiated agreement.
他控告政府撕毁(不履行)协议.

Lewis tore to shreds the treaty he had signed.
刘易斯将他亲手签署的条约撕毁。

Protect public property. Do not scribble on the pages of books or tear them out.
爱护公共财物，不准在图书上乱涂乱画。不得撕毁书页。

tear是什么意思：
n. 眼泪；撕扯；洞或裂缝；疾驰
v. 流泪；撕掉；扰乱

My old pants have a tear.
我的旧裤子上有一个裂口。

The accident unlocked a flood of tears.
这个意外让他的眼泪流了出来。

Tears well in her eyes.
她的眼中涌出了泪水。

rip是什么意思：
v. 撕；猛力扯掉；划破，撕成；拆，纵锯，被撕破，裂开
n. 裂开；裂缝；撕扯，偷窃

rip off; stole from
扯开;偷窃

All the soil cover were ripped.
全部土壤盖层都被剥去了。

They describ it as a
他们用“美丽的偷窃”来形容它。

shred是什么意思：
n. 碎片，破布；极少量
v. 切碎，撕碎；用撕毁机撕毁

a shred of cloth
一块撕碎的布片

There is not a shred of truth in the story.
这则报道中没有一句实话。

They may be shredding documents.
他们可能是在粉碎文件。