彼は要人だから、そのように扱わねばならない。の英語

He is a VIP and we must treat him as such.

He is a foreigner, and ought to be treated as such.

He is an old man and should be treated as such.

Such meanness on his part makes him despised.

He is a director, and should be treated as such.

He may well get scolded for doing that.

He is an honest man and will always remain so.

He is honest man and will always remain so.

It's shameful that he behaves that way.

He may well get scolded for doing that.

We must stop him from doing such stupid things.

It is impudent of him to say so.

To do him justice, he is a nice guy.

He plays dirty pool.

It is rude of him―insolent of him―to do such a thing―That is insolence.

In a word, he is a flatterer.

In other words, he is lazy.

He must be crazy that he should do so.

He must be ashamed of this foolish behavior.

It'll be a pity if he fails.

He is not wise but clever.

I will probably think he's a bad person forever.

To do him justice, he is a man of common sense.

It's as easy as pie for him.

To do him justice, he is a good-natured man.

Don't call those students fools.

Don't call him an idiot.

Don't put such silly thoughts into his head.

To do him justice, he is able.

It is characteristic of him to do such a thing.