8.8 be afraid doing/to do be afraid to do 不敢，胆怯去做某事，是主观上的原因不去做，意为"怕"； be afraid of doing 担心出现doing的状况、结果。 doing 是客观上造成的，意为"生怕，恐怕"。 She was afraid to step further in grass because she was afraid of being bitten by a snake. 她生怕被蛇咬着，而不敢在草丛中再走一步。 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。