そんな事をするなんて君は馬鹿に違いない。の英語

You must be a fool to do such a thing.

You are a fool for doing something like that.

You are no better than an animal to do such a thing.

You should know better than to do that.

It is mean of you to tell a lie about it.

You are really a hopeless fool.

How can you say such a foolish thing?

How can you say such a foolish thing.

You are acting against your own interests.

You should know better than that.

It was foolish of you to do a thing like that.＝You were foolish to do a thing like that.

She is a fool for doing something like that.

Stop making a fool of yourself.

You should know better.

What made you decide to do a thing like that is entirely beyond my comprehension!

Don't say stupid things!

It is wicked of you to do such things.

Stop acting like such a fool.

How dare you behave so rudely!

How dare you behave so rudely?

Come on, don't be silly.

You are brave to do something like that.

It is the height of folly to do such a thing.

Doing that was stupid.

I know better than to do something like that.

I know better than to do a thing like that.

I'd have to be an idiot to do that.

You will be taken for an ill-mannered person if you do so.

You are an idiot who doesn't know anything.

How stupid of him to do such a thing!