I sometimes feel like screaming with frustration.

我有时苦恼要喊叫。

She was screaming at me like a fishwife.

她对着我喊叫。

He let off steam by yelling at a clerk.

他对一个职员喊叫, 借以发泄怒气。

He shouted angrily at anyone within range.

他看见谁，就气地对谁喊叫。

It's not polite to howl down a speaker.

喊叫妨碍别人的讲话不礼貌的。

They started shouting at me and it soon got very heavy.

他们开始对我喊叫，情形很快变很严重。

He made a spectacle of himself by shouting at the barman.

他冲酒吧招待员喊叫，丢人现眼。

Why are you shouting?

你为什么喊叫?

He’s a real Jekyll and Hyde. At home he shouts at his wife and children all the time; at work he’s always charming and friendly.

他才个有双重性格的人呢！在家里冲着妻子儿女喊叫；上班时却良谦恭，和善友好。

In English, all capital words are used only when you are very angary, almost equal to shouting or cursing. This way I suggest you never use these capitals again.

在英语里，所有写字母都当你特别生气时才用的，几乎相当于喊叫或者诅咒的时候。我建议你一定不要再用这些写字母了！