natural的副词形式怎么写

　　The responsibility naturally fell on our shoulders.

　　责任自然地落到了我们肩上。

　　Naturally, the tobacco industry is violently opposed.

　　自然地，烟草行业会强烈反对。

　　Naturally, I get upset when things go wrong.

　　事情出了错，我当然就会很烦。

　　After a while, we naturally started talking about the children.

　　过了一会儿，我们自然而然地谈起了孩子。