1、be afraid to do;
She was afraid to do a presentation. 她害怕做演讲。
I am afraid to fail a course. 我害怕会挂科。
2、be afraid of doing sth;
I'm afraid of being late for class.我害怕迟到。
I afraid of speaking English.我害怕说英语。
3、get old feet.
She got cold feet before her wedding.她在婚礼前临阵退缩。
I'm getting cold feet. Someone please help me.我太紧张了，谁能帮我？
