当某人 lights up, 这意味着他/她看着非常高兴或为何事情而感到欣喜。
例句
Mum will light up when she realises weve planned1 a surprise party for her.
My grandma would2 light up when she talked about the olden days.
请注意
另一个字面一样的短语 lighten3 up 意思和 light up 不同,这是劝某人应该放松一些,不要太紧张或太在乎某件事情。
Hurry! Were going4 to miss the train!
Lighten up therell be another one five minutes later5.