be afraid to do sth ,be afraid of doing sth的区别

a．be afraid to do sthb．be afraid of doing sth1．be afraid to do 主要指按照经验或常识不敢去做某事或没有勇气去做某事.如：The little boy was afraid to go out at night．这个小男孩晚上不敢出去.注：在现代...