She knows her husband's psychology.

She knows well how to deal with children.

She is good with kids.

He is man of moderate views.

He knows how to make good use of his time.

She had the decency to apologize.

He looked as if he knew all about it.

The chief clerk is not a hardworking man, but gets ahead rapidly because he knows how to curry favor with his superiors.

It would be best to leave it to a man who knows the ropes.

The chances of success are greater if the business man knows the ropes, and also has more funds at his disposal.