be afraid to do sth.真正的意思是“害怕做某事”,也就是主语对做某事内心感到恐惧；be afraid of doing sth.表示主语内心里不情愿做某事,也可以说是不希望发生某事,但自己不一定能避免它.至于be afraid of sth就是...再问一个好吗 He's like a father to me.It looks like a cat.He looks like his father.She is like her mother.句中like为（）词，意为：（ ），常与look,be或sound连用构成look like....（ ），be like....（ ），sonud like...（）归纳：like还可做（）词，后常跟（）作宾语 【谢谢】好，记得采纳，谢谢介像看起来像 ...就像... 听起来像...动不定式希望对你有帮助