他看起来很害怕用英语怎么说

"他看起来很害怕用英语" 的英文表达方式可以是 "He looks scared to speak English." 或 "He appears to be frightened of speaking English."

这种表达方式源于英语中 "look/appear" 这个词，表示外表或态度，以及 "scared/frightened" 这个词，表示害怕的意思。

例句：

He looks scared to speak English in front of the class. (他在班里用英语说话时看起来很害怕。)
She appeared to be frightened of making mistakes when she was speaking English. (她在说英语时看起来害怕犯错。)