ack前面填什么

aback ad. 向后地,朝后地；

black adj.黑色的；

back adv.回(原处)；向后；

backtrack 向下顶替；

barrack n. 兵营；vt. 使驻兵营内。

例句

She was completely taken aback by his anger.

他的愤怒把她吓了一大跳。

Roland was taken aback by our strength of feeling.

罗兰对我们感情的强烈程度感到很吃惊。

We were rather taken aback by her hostile reaction.

她敌视的反应使我们大吃一惊。

Toad was completely taken aback.

托德吓了一大跳。