彼はよくつまらないことで腹を立てる。の英語

He often gets angry about trifles.

He often gets angry at small things.

He often gets worked up over little things.

He will take offence at trifles.

He gets angry over trivial things.

He is aware of his own fault.

He's aware of his own faults.

He makes too much of trifling matters.

When he is in ill humour, he will fall foul of everybody―run amuck at everybody―He will work off his ill temper on everybody.

He is a creepy perv.

He loses his temper whenever anything goes wrong with him.

He gets angry about trifles.

He has an embarrassed air.

He is embarrassed in manner

He is thought of in a bad way by those around him.

He has a bad habit of losing his temper for no reason.

He will brave it out―brazen it out.

He is in great trouble about that.

He tends to get angry over trifles.

He is not very strict about it.

His bark is worse than his bite.

He stops speaking when he is inconvenienced.

He was about to mingle in an unpleasant affair

He is a mean tickler.

Requests for money annoy him to death―bother him to death.

He is put out by trifles―（他動詞構文にすれば）―Trifles put him out of humour.

What a disagreeable fellow he is!

He is a mass of faults.

When he gets drunk, he picks a quarrel with anyone who happens to be around.

He will take offence at trifles.