be much worse

Policeman:Why didn't you shout for help when someone robbed your watch?
Man:If I opened my mouth,they would find my four gold teeth.That would be much worse.
嗯，改了几个过去完成时的句子，其他的都是普通过去式了。初二楼主就要学这些语法

Policeman: Why didn't you shout for help when you were robbed of your watch?
警察：为什么你不喊救命当你手表被抢的时候？
Man: If I had opened my mouth, they'd have found my four gold teeth. That would be much worse.
那男人（被抢的）：如果我当时张开了嘴，他们会看到我的四个金牙。那损失会更大的。

这里语法是有很多，过去式，从句，过去完成的虚拟语气。确实不适合初一的朋友。

Policeman: Why didn't you shout for help when you were robbed of your watch?
Man: If I had opened my mouth, they'd have found my four gold teeth. That would be much worse.

若是改得简单些就不好笑了

Policeman: When they robbed you of your watch,why didn't you shout for help ?
Man: If I opened my mouth, they would found my four gold teeth. That would be much worse.
楼主将就点用吧，要保持原意就不能改太多啊