to...和介词+-ing形式 比较

8月30日晚上22:01--22:16

afraid to something 用来谈论计划中要做,但又有危险或后果不好的事:

A lot of people are afraid to go out at night.

He was afraid to tell his parents about the broken window.

afraid of -ing 用来谈论我们并非计划要做,但可能会发生的不利于我们的事:

The path was icy, so we walked very carefully. We were afraid of falling.

I don't like dogs. I'm always afraid of being bitten.

So, you are afraid to do something because you are afraid of something happening as a result:

I was afraid to go near the dog because I was afraid of being bitten.

interested in doing 与 interested to do  比较:

I'm trying to sell my car but nobody is interested in buying it.

I was interested to hear that Diane has got a new job.

Ask George for his opinion. I would be interested to know what he thinks.

I was surprised to hear that Diane has got a new job.

sorry to ... 是为正在做或将要做的事表示歉意:

I'm sorry to bother you, but I need to talk to you.

还表示对某人的同情  I was sorry to hear that Fiona lost her job.

当我们为已经做的某事而道歉时,用 sorry for doing

(I'm) sorry for shouting at you yesterday.

(I'm) sorry I shouted at you yesterday.

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