“面带笑容”常见的英文表达有：
wear a smile： “wear”在这里有“呈现、显出（某种表情或状态）”的意思 ，“wear a smile”形象地表达了脸上呈现出笑容的状态。例如：She always wears a smile, which makes her very approachable.（她总是面带笑容，这让她显得很亲切。 ）
have a smile on one's face：直接说明了脸上有笑容这一状态，意思清晰明了。例如：He had a big smile on his face when he heard the good news.（当他听到这个好消息时，脸上露出了灿烂的笑容。 ）