说到烘焙蛋糕，她可是个专家。

___When ___it ___comes ___to baking cakes, she's an expert.

他经验丰富，但说到电脑，他需要一些帮助。

He's very experienced, but ___when ___it ___comes ___to computers, he needs some help.

说到环境问题，很多人都有强烈的看法。

Many people have strong opinions ___when ___it ___comes ___to environmental issues.