［特殊詞精講］be afraid doingto do

beafraid to do　不敢，膽怯去做某事，是主觀上的原因不去做，意爲"怕"，be afraid of doing　擔心出現doing的狀況、結果。doing 是客觀上造成的，意爲"生怕，恐怕".例如：

　　She was afraid to step further in grass because she was afraid of being bitten by a snake.

　　她生怕被蛇咬著，不敢在草叢中再走一步。

　　She was afraid to wake her husband. 她不敢去叫醒她丈夫。

　　She was afraid of waking her husband. 她生怕吵醒她丈夫。