你以为轻易地就能打败他，那你就大错特错了。

If you think you can easily beat him, you're all wet.

《新英汉大辞典》

从未怀疑过你的信仰，那你就大错特错了。

If you never doubt your beliefs, then you're wrong a lot.

youdao

汤姆：那你就大错特错了，你真是个笨蛋。

Tom: All wet. You are such a fool.

youdao

如果你认为他是好人，那你就大错特错了。

If you think he is a good man, you have made a grand mistake.

youdao

如果你认为他是好人，那你就大错特错了。

If you think he is a good person, you are badly wrong.

youdao

如果你认为他是个好人，那你就大错特错了。

If you think he is a good man, think again.

youdao

如果你认为这很危险的话，那你就大错特错了。

And if you think it is dangerous, you are dead wrong.

youdao

如果你以为这么容易就打击我，那你就大错特错了。

If you think you can break me that easily, you're wrong.

youdao

但如果你认为我们在更衣室里喝了那瓶香槟，那你就大错特错了。

But if you think we drank it in the dressing room, you are horribly wrong.

youdao

当然，如果你觉得找到搬家公司就万事大吉，那就大错特错了。

Of course, if you think you find moving company is fine, that would be wrong.

youdao

当然，如果你觉得找到搬家公司就万事大吉，那就大错特错了。

Of course, if you think you find moving company is fine, that would be wrong.

youdao