"老师看起来很生气"用英语可以说成 "The teacher looks angry."
"look"在这里是动词，意思是"看起来"。
"angry"是形容词，意思是"生气的"。
例句：
The teacher looks angry because the students are not paying attention.
The teacher looks angry, I wonder what happened.
My teacher looks angry today, I hope everything is okay.
翻译：
老师看起来很生气，因为学生们没有注意。
老师看起来很生气，我想知道发生了什么。
我的老师今天看起来很生气，我希望一切都好。