He listened attentively, asking questions now and then to clarify.
Katie listened attentively and then thought it over a few minutes.
He listened attentively to her requests – something easy to see on the road, lots of room inside, easy to drive and with good gas mileage.
Taking a few turns on the quarter-deck, he paused to gaze over the side, then slowly getting into the main-chains he took Stubb's long spade--still remaining there after the whale's Decapitation--and striking it into the lower part of the half-suspended mass, placed its other end crutch-wise under one arm, and so stood leaning over with eyes attentively fixed on this head.
Nevertheless, any one's experience will teach him, that though he can take in an undiscriminating sweep of things at one glance, it is quite impossible for him, attentively, and completely, to examine any two things--however large or however small--at one and the same instant of time; never mind if they lie side by side and touch each other.
How would you define attentively? Add your definition here.